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Code Editor : docelement.html

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  <title>Mom -- Document processing, element tags</title>
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<table style="width: 100%;">
<tr>
  <td><a href="toc.html">Back to Table of Contents</a></td>
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<h1 class="docs">The document element tags</h1>

<div style="width: 386px; margin: auto;">
<ul class="no-enumerator">
  <li><a href="#docelement-intro">Introduction to the document element tags</a></li>
  <li><a href="#docelement-control">Control macros &ndash; changing the tag defaults</a>
  <ul style="margin-left: -.5em; list-style-type: disc;">
    <li><a href="#control-macro-args">Arguments to the control macros</a>
    <ul style="margin-left: -.5em; list-style-type: circle;">
      <li><a href="#family-and-font">family and font</a></li>
      <li><a href="#point-size">point size</a></li>
      <li><a href="#color">colour</a></li>
      <li><a href="#quad">quad/justification</a></li>
      <li><a href="#underline">underline style, rule weight</a></li>
    </ul></li>
    <li><a href="#grouping">Grouping control macros</a></li>
  </ul></li>
</ul>
</div>

<h2 id="toc-doc-element" class="docs" style="text-align: center;">Document element tags table of contents</h2>

<div id="docelement-mini-toc" style="font-size: 100%; line-height: 150%; margin-top: .5em;">
<div class="mini-toc-col-1" style="margin-left: 0;">
<h3 class="toc toc-docproc-header" style="margin-top: 1em;"><a class="header-link" href="#epigraph-intro">Epigraphs</a></h3>
<ul class="toc-docproc" style="margin-top: .5em;">
  <li><a href="#epigraph">EPIGRAPH</a></li>
  <li><a href="#epigraph-control">Epigraph control</a></li>
</ul>
<h3 class="toc toc-docproc-header"><a class="header-link" href="#pp-intro">Paragraphs</a></h3>
<ul class="toc-docproc" style="margin-top: .5em;">
  <li><a href="#pp">PP</a></li>
  <li><a href="#pp-control">Paragraph control</a></li>
</ul>
<h3 class="toc toc-docproc-header"><a class="header-link" href="#heading-intro">Headings</a></h3>
<ul class="toc-docproc" style="margin-top: .5em;">
  <li><a href="#heading">HEADING</a></li>
  <li><a href="#heading-control">Heading control</a></li>
  <li><a href="#oldstyle-headings-intro">Oldstyle headings</a></li>
</ul>
<h3 class="toc toc-docproc-header"><a class="header-link" href="#linebreak-intro">Linebreaks (section breaks)</a></h3>
<ul class="toc-docproc" style="margin-top: .5em;">
  <li><a href="#linebreak">LINEBREAK</a></li>
  <li><a href="#linebreak-control">Linebreak control</a></li>
</ul>
<h3 class="toc toc-docproc-header"><a class="header-link" href="#quote-intro">Quotes (line for line; poetry or code)</a></h3>
<ul class="toc-docproc" style="margin-top: .5em;">
  <li><a href="#quote">QUOTE</a></li>
  <li><a href="#quote-control">Quote control</a></li>
</ul>
<h3 class="toc toc-docproc-header"><a class="header-link" href="#blockquote-intro">Blockquotes (cited material)</a></h3>
<ul class="toc-docproc" style="margin-top: .5em;">
  <li><a href="#blockquote">BLOCKQUOTE</a></li>
  <li><a href="#blockquote-control">Blockquote control</a></li>
</ul>
<h3 class="toc toc-docproc-header"><a class="header-link" href="#code-intro">Inserting code snippets</a></h3>
<ul class="toc-docproc" style="margin-top: .5em;">
  <li><a href="#code">CODE</a></li>
  <li><a href="#code-control">Code control</a></li>
</ul>
</div>
<div class="mini-toc-col-2" style="margin-top: 1.5em;">
<h3 class="toc toc-docproc-header"><a class="header-link" href="#list-intro">Nested lists</a></h3>
<ul class="toc-docproc" style="margin-top: .5em;">
  <li><a href="#list">LIST</a></li>
  <li><a href="#item">ITEM</a></li>
  <li><a href="#list-control">List control</a></li>
</ul>
<h3 class="toc toc-docproc-header"><a class="header-link" href="#number-lines-intro">Line numbering</a></h3>
<ul class="toc-docproc" style="margin-top: .5em;">
  <li><a href="#number-lines">NUMBER_LINES</a></li>
  <li><a href="#number-lines-control">Line numbering control</a></li>
</ul>
<h3 class="toc toc-docproc-header"><a class="header-link" href="#footnote-intro">Footnotes</a></h3>
<ul class="toc-docproc" style="margin-top: .5em;">
  <li><a href="#footnote">FOOTNOTE</a></li>
  <li><a href="#footnote-control">Footnote control</a></li>
</ul>
<h3 class="toc toc-docproc-header"><a class="header-link" href="#endnote-intro">Endnotes</a></h3>
<ul class="toc-docproc" style="margin-top: .5em;">
  <li><a href="#endnote">ENDNOTE</a></li>
  <li><a href="#endnote-control">Endnote control</a></li>
</ul>
<h3 class="toc toc-docproc-header"><a class="header-link" href="#margin-notes-intro">Margin notes</a></h3>
<ul class="toc-docproc" style="margin-top: .5em;">
  <li><a href="#mn-init">MN_INIT (set margin notes parameters)</a></li>
  <li><a href="#mn">MN</a></li>
</ul>
<h3 class="toc toc-docproc-header"><a class="header-link" href="#finis-intro">Document termination string</a></h3>
<ul class="toc-docproc" style="margin-top: .5em;">
  <li><a href="#finis">FINIS</a></li>
  <li><a href="#finis-control">Finis control</a></li>
</ul>
</div>
</div>

<h2 id="docelement-intro" class="docs">Introduction to the document element tags</h2>

<p>
Once you&#8217;ve completed the setup for a document (see
<a href="docprocessing.html#docprocessing-tut">Setting up a mom document</a>),
formatting it is a snap.  Simply invoke the appropriate tag for
each document element as you need it.  The tags are macros that
tell mom: &#8220;This is a paragraph; this is a heading; this is a
footnote,&#8221; and so on.
</p>

<p>
Generally, for each tag, there are
<a href="definitions.html#controlmacro">control macros</a>
for the tag&#8217;s family, font and point size.  Where appropriate,
there are macros to control leading, indents, quad and special
features as well.
Mom has tasteful defaults for all the tags, hence you only use the
control macros when you want to change the way she does things.
This is usually done prior to
<a href="docprocessing.html#start">START</a>,
but can, in fact, be done at any time in the course of a document.
Any change to a tag&#8217;s style affects all subsequent invocations
of the tag.
</p>

<h2 id="docelement-control" class="docs">Control macros &ndash; changing the tag defaults</h2>

<p>
The control macros for document processing tags let you design the
look of all the parts of your documents&mdash;should you wish.  At
a bare minimum, all tags have macros to change mom&#8217;s defaults
for family, font, point size and colour.  Where appropriate, there
are macros to control leading, indents and quad as well.
</p>

<p>
In addition, many tags have special macros to control features that
are pertinent to those tags alone.  Have a look at the section
dealing with any particular tag to find out what macros control the
tag, and what mom&#8217;s defaults for the tag are.
</p>

<p>
The control macros may be used at any time during the course of a
document (ie before or after
<a href="docprocessing.html#start">START</a>).
The changes you make alter all subsequent invocations of the
affected tag until you make another change, either by passing new
arguments to the tag&#8217;s control macro, or toggling a particular
feature of the tag on or off.
</p>

<p>
And don&#8217;t forget: the
<a href="typesetting.html#macros-typesetting">typesetting macros</a>
can be used at any time, including inside
<a href="definitions.html#toggle">toggle</a>
tags (affecting only that particular invocation of the tag).
Equally,
<a href="definitions.html#inlines">inline escapes</a>
can be used in tags that take
<a href="definitions.html#stringargument">string arguments.</a>
</p>

<div class="box-tip">
<p class="tip">
<span class="tip">Tip:</span>
Get familiar with mom at her default settings before exploring the
control macros.  Put her through her paces.  See how she behaves.
Get to know what she feels like and how she looks, both in your
text editor and on the printed page.  Then, if you don&#8217;t like
something, use this documentation to find the precise macro you need
to change it.  There are tons of control macros.  Reading up on them
and trying to remember them all might lead you to think that mom is
complex and unwieldy, which is not only untrue, but would offend her
mightily.
</p>
</div>

<div class="box-important">
<p class="tip-top">
<span class="important">Important:</span>
The family, font, point size, colour and leading control macros have
no effect in
<a href="docprocessing.html#printstyle">PRINTSTYLE <kbd>TYPEWRITE</kbd></a>,
except where noted throughout this documentation.
</p>

<p class="tip-bottom">
Please also note that the defaults listed with the control macros
apply only to
<a href="docprocessing.html#printstyle">PRINTSTYLE <kbd>TYPESET</kbd></a>
unless a default for <kbd>TYPEWRITE</kbd> is also given.
</p>
</div>

<h3 id="control-macro-args" class="docs">Arguments to the control macros</h3>

<h4 id="family-and-font" class="docs" style="margin-top: 1em; margin-bottom: -.75em;">Family and font</h4>

<p>
The arguments to the control macros that end in _FAMILY or _FONT are
the same as for
<a href="typesetting.html#family">FAMILY</a>
and
<a href="typesetting.html#font">FT</a>.
</p>

<h4 id="point-size" class="docs" style="margin-top: -.5em; margin-bottom: -.75em;">Point size</h4>

<p>
Control macros that end in _SIZE always take
the form <kbd>+&lt;n&gt;</kbd> or <kbd>-&lt;n&gt;</kbd> where
&lt;n&gt; is the number of
<a href="definitions.html#picaspoints">points</a>
larger (+) or smaller (-) than the point size of paragraphs
you want the document element to be.  For example, to set
blockquotes 2 points smaller than the type in paragraphs, do
<br/>
<span class="pre-in-pp">
  .BLOCKQUOTE_SIZE -2
</span>
There&#8217;s no need for a
<a href="definitions.html#unitofmeasure">unit of measure</a>
with the _SIZE control macros; points is assumed.
</p>

<h4 id="color" class="docs" style="margin-top: -.5em; margin-bottom: -.75em;">Colour</h4>

<p>
Control macros that end in _COLOR take as their argument a colour
name pre-defined (or &#8220;initialized&#8221;) with
<a href="color.html#newcolor">NEWCOLOR</a>
or
<a href="color.html#xcolor">XCOLOR</a>.
For example, if you want your
<a href="#linebreak">author linebreaks</a>
to be red, once you&#8217;ve defined or initialized the colour, red,
<br/>
<span class="pre-in-pp">
  .LINEBREAK_COLOR red
</span>
will turn them red.
</p>

<h4 id="lead" class="docs" style="margin-top: -.5em; margin-bottom: -.75em;">Lead/linespacing</h4>

<p>
Control macros that end in _AUTOLEAD take the same argument as
<a href="typesetting.html#autolead">AUTOLEAD</a>,
<i>viz.</i> a digit that represents the number of points to add to
the tag&#8217;s point size to arrive at its
<a href="definitions.html#leading">leading</a>.
For example, to set footnotes
<a href="definitions.html#solid">solid</a>, do
<br/>
<span class="pre-in-pp">
  .FOOTNOTE_AUTOLEAD 0
</span>
To set footnotes with a 1-point lead (ie with the line spacing
one point greater than the footnote&#8217;s point size), do
<br/>
<span class="pre-in-pp">
  .FOOTNOTE_AUTOLEAD 1
</span>
</p>

<div class="box-tip" style="margin-top: -1.25em;">
<p class="tip">
<span class="note">Note:</span>
_AUTOLEAD control macros do not have a <kbd>FACTOR</kbd> argument.
</p>
</div>

<h4 id="control-indents" class="docs" style="margin-top: -.75em; margin-bottom: -.75em;">Indents</h4>

<p>
Except for
<a href="#para-indent">PARA_INDENT</a>,
the argument to control macros that end in _INDENT can take
either a single numeral (whole numbers only, no decimal fractions)
<i>without</i> a
<a href="definitions.html#unitofmeasure">unit of measure</a>
appended to it, or a digit (including decimal fractions) <i>with</i>
a unit of measure appended.
</p>

<p>
A digit <i>without</i> a unit of measure appended represents by
how much you want your paragraph first-line indents (set with
PARA_INDENT) multiplied to achieve the correct indent for a
particular tag.  For example,
<br/>
<span class="pre-in-pp">
  .PARA_INDENT       2m
  .BLOCKQUOTE_INDENT 2
</span>
means that blockquotes will be indented from the left and right
margins by twice the size of the paragraph indent, or 4
<a href="definitions.html#em">ems</a>.
</p>

<p>
A digit <i>with</i> a unit of measure appended defines an absolute
indent, relative to nothing.  In the following, blockquotes will be
indented by 3
<a href="definitions.html#picaspoints">picas</a>
and 6
<a href="definitions.html#picaspoints">points</a>,
regardless of the paragraph indent.
<br/>
<span class="pre-in-pp">
  .PARA_INDENT       2m
  .BLOCKQUOTE_INDENT 3P+6p
</span>
</p>

<h4 id="quad" class="docs" style="margin-top: -1em; margin-bottom: -.75em;">Quad/justification style</h4>

<p>
Control macros that end in _QUAD take the same arguments as
<a href="typesetting.html#quad">QUAD</a>.
</p>

<h4 id="underline" class="docs" style="margin-bottom: -.75em;">Underline style, rule weight</h4>

<p>
If mom gives the option to underline a document element, the weight
of the underline and its distance from the
<a href="definitions.html#baseline">baseline</a>
are controlled by macros that end in _UNDERSCORE or _UNDERLINE.
These macros take the following arguments:
<br/>
<span class="pre-in-pp">
  DOUBLE     - double underscore
  &lt;weight&gt;   - the underscore weight (in points, no unit of measure required
  &lt;distance&gt; - distance from baseline (unit of measure required)
  &lt;rule gap&gt; - distance between double underscore rules (unit of measure required_
</span>
<kbd>DOUBLE</kbd> by itself will double-underscore the element.  The
remaining arguments must be entered in the order given.  You may not
skip over any of them, which means that if you only wish to change
<kbd>&lt;rule gap&gt;</kbd>, you must still enter a
<kbd>&lt;weight&gt;</kbd> and <kbd>&lt;distance&gt;</kbd> argument.
</p>

<p>
Page elements that are separated from
<a href="definitions.html#running">running text</a>
by a rule (ie page headers, page footers and footnotes) are
controlled by macros that end in _RULE_WEIGHT.
</p>

<p>
The weight argument to _UNDERLINE macros is the same as the argument
to
<a href="inlines.html#rule-weight">RULE_WEIGHT</a>,
as is the argument to _RULE_WEIGHT macros.
</p>

<h3 id="grouping" class="docs">Grouping control macros</h3>

<p>
As of version 2.1, it is possible to group control macros for a
particular tag into a single <kbd>&lt;element&gt;_STYLE</kbd> macro.
For example, rather than setting the family, size, and indent of
<a href="#blockquote-intro">BLOCKQUOTES</a>
with
<br/>
<span class="pre-in-pp">
  .BLOCKQUOTE_FAMILY H
  .BLOCKQUOTE_SIZE -2
  .BLOCKQUOTE_INDENT 4P
</span>
you can enter the same style parameter changes with
<br/>
<span class="pre-in-pp">
  .BLOCKQUOTE_STYLE \
  FAMILY H \
  SIZE -2 \
  INDENT 4P
</span>
<kbd>&lt;element&gt;_STYLE</kbd> macros use
&#8220;keyword/value&#8221; pairs (<kbd>FAMILY</kbd> is a keyword,
<kbd>H</kbd> is a value), and may be entered entirely on one line,
or, as the example shows, broken into several readable lines using
the backslash.  The macro itself and all but the last keyword/value
pair require the backslash when this style is used.
</p>

<p>
Not all the control macros for a particular tag may be available
with an <kbd>&lt;element&gt;_STYLE</kbd> macro.  Generally speaking,
though, if a tag has control macros for
<br/>
<span class="pre-in-pp">
  FAMILY FONT SIZE
  LEAD AUTOLEAD
  QUAD INDENT
  COLOR
  CAPS SMALLCAPS
  UNDERLINE/UNDERSCORE
</span>
those parameters may be used within an
<kbd>&lt;element&gt;_STYLE</kbd> macro.
</p>

<div class="box-tip">
<p class="tip">
<span class="note">Note:</span>
If you need to reverse the sense of <kbd>CAPS</kbd>,
<kbd>SMALLCAPS</kbd> or <kbd>UNDERSCORE/UNDERLINE</kbd>, which
do not take a value after the keyword, use <kbd>NO_CAPS</kbd>,
<kbd>NO_SMALLCAPS</kbd> and <kbd>NO_UNDERSCORE/NO_UNDERLINE</kbd>.
</p>
</div>

<h2 id="epigraph-intro" class="macro-group">Epigraphs</h2>

<ul style="margin-left: -.5em;">
  <li><a href="#epigraph">Tag: EPIGRAPH</a></li>
  <li><a href="#epigraph-control">Epigraph control macros and defaults</a></li>
</ul>

<p>
<a href="definitions.html#epigraph">Epigraphs</a>
colour, flavour, or comment on the document they precede.
Typically, they are centred at the top of a document&#8217;s first page
(underneath the title) and set in a smaller point size than that of
paragraph text.
</p>

<p>
By default, mom sets epigraphs centred and
<a href="definitions.html#filled">unfilled</a>;
this lets you input them on a line for line basis.  This behaviour
can be changed to accomodate
<a href="definitions.html#filled">filled</a>
epigraph &#8220;blocks.&#8221;
</p>

<div class="macro-id-overline">
<h3 id="epigraph" class="macro-id">EPIGRAPH</h3>
</div>

<div class="box-macro-args">
Macro: <b>EPIGRAPH</b> <kbd class="macro-args">&lt;toggle&gt; | [ BLOCK ]</kbd>
</div>

<p>
EPIGRAPH is a toggle, used like this:
<br/>
<span class="pre-in-pp">
  .EPIGRAPH
  &lt;text of epigraph&gt;
  .EPIGRAPH OFF
</span>
<kbd>OFF</kbd>, above, could be anything&mdash;say, <kbd>Q</kbd> or
<kbd>X</kbd>&mdash;since any argument other than <kbd>BLOCK</kbd>
turns it off.
</p>

<p>
If given the argument, <kbd>BLOCK</kbd>, EPIGRAPH sets epigraphs
<a href="definitions.html#filled">filled</a>,
justified or quadded in the same direction as paragraphs, indented
equally from both the left and right margins.
</p>

<p>
If a block-style epigraph runs to more than one paragraph (unlikely,
but conceivable), you must introduce every paragraph&mdash;including
the first&mdash;with the
<a href="#pp">PP</a>
tag.
</p>

<div class="box-tip">
<p class="tip">
<span class="note">Note:</span>
EPIGRAPH should only be used at the top of a document (ie just
after
<a href="docprocessing.html#start">START</a>)
or after headings.  The latter is not especially recommended, but it
does work.  In all other places where you want quotes or cited text,
use
<a href="#quote">QUOTE</a>
or
<a href="#blockquote">BLOCKQUOTE</a>.
</p>
</div>

<div class="box-tip">
<p class="tip">
<span class="tip">Tips on vertical spacing around epigraphs:</span>
If you wish to change the vertical position of an epigraph with
<a href="typesetting.html#space">SPACE</a>/
<a href="typesetting.html#ald">ALD</a>/
<a href="typesetting.html#rld">RLD</a>,
do so before invoking <kbd>.EPIGRAPH</kbd>, like this:
<br/>
<span class="pre-in-pp">
  .SP -6p
  .EPIGRAPH
  A notable quote.
  .EPIGRAPH OFF
</span>
If you&#8217;re setting a document in
<a href="docprocessing.html#columns">columns</a>
and you&#8217;d like to add or subtract space <i>after</i> the
epigraph, which is centred over the top of both columns, the place
to do it is inside the epigraph, like this:
<br/>
<span class="pre-in-pp">
  .EPIGRAPH
  A notable quote.
  .SP 1v
  .EPIGRAPH OFF
</span>
If you were to add the <kbd>.SP 1v</kbd> outside the epigraph, the
space would be added to the top of the leftmost column only,
resulting in unbalanced columns.
</p>
</div>

<div class="defaults-container" style="padding-bottom: 8px;">
<h3 id="epigraph-control" class="docs defaults" style="margin-top: -.25em;">EPIGRAPH control macros and defaults</h3>

<p class="defaults">
See
<a href="#control-macro-args">Arguments to the control macros</a>.
<br/>
The following EPIGRAPH control macros may also be
<a href="#grouping">grouped</a>
using EPIGRAPH_STYLE.
</p>

<span class="pre defaults">
.EPIGRAPH_FAMILY    default = prevailing document family; default is Times Roman
.EPIGRAPH_FONT      default = roman
.EPIGRAPH_SIZE      default = -1.5 (points)
.EPIGRAPH_COLOR     default = black
.EPIGRAPH_AUTOLEAD  default = 2 points
(The next two apply to &#8220;block&#8221; style epigraphs only)
.EPIGRAPH_INDENT*  (see Note on EPIGRAPH_INDENT, below)

*Indent here refers to the indent from both the left and right margins
 that centres block style epigraphs on the page.
</span>
</div>

<div class="box-notes">
<h3 id="epigraph-indent" class="docs notes" style="margin-bottom: -.75em;">Note on EPIGRAPH_INDENT</h3>

<p style="margin-top: .5em;">
If you pass EPIGRAPH_INDENT an integer with no unit of measure
appended, the integer represents the amount by which to multiply
PARA_INDENT to arrive at an indent for block style epigraphs.  If
you append a unit of measure to the argument, the indent will be
precisely the amount specified.
</p>

<p>
Please also note that if your PARA_INDENT is <kbd>0</kbd> (ie
no indenting of the first line of paragraphs), you must set an
EPIGRAPH_INDENT yourself, with a unit of measure appended to the
argument.  Mom has no default for EPIGRAPH_INDENT if paragraph first
lines are not being indented.
</p>

<p class="tip-bottom">
The default value for EPIGRAPH_INDENT is <kbd>3</kbd> (for
<a href="docprocessing.html#printstyle">PRINTSTYLE TYPESET</a>)
and <kbd>2</kbd> (for
<a href="docprocessing.html#printstyle">PRINTSTYLE TYPEWRITE</a>).
</p>
</div>

<h2 id="pp-intro" class="macro-group">Paragraphs</h2>

<ul style="margin-left: -.5em;">
  <li><a href="#pp">Tag: PP</a></li>
  <li><a href="#pp-control">Paragraph control macros and defaults</a></li>
</ul>

<p>
The paragraph macro is the one you use most often.  Consequently,
it&#8217;s one of most powerful, yet simplest to use&mdash;just the
letters PP.  No arguments, nothing.  Just <kbd>.PP</kbd> on a line
by itself any time, in any document element, tells mom you want to
start a new paragraph.  The spacing and indent appropriate to where
you are in your document are taken care of automatically.
</p>

<p>
By default, mom does not indent the first paragraph of a document,
nor paragraphs that fall immediately after headings.  The first
paragraphs of blockquotes and block-style epigraphs are also not
indented.  This behaviour can be changed with the control macro
<kbd><a href="#para-indent-first">INDENT_FIRST_PARAS</a></kbd>.
</p>

<p>
Mom does not deposit a blank line between paragraphs.  If you want
her to do so, use the control macro
<a href="#pp-space">PARA_SPACE</a>.
(I don&#8217;t recommend using this macro with
<a href="typesetting.html#printstyle">PRINTSTYLE TYPEWRITE</a>.)
</p>

<p>
Note that mom does not provide widow or orphan control for
paragraphs (ie even if only one line of a paragraph fits at the
bottom of a page, she will set it on that page).  The reason for
this is that writers of fiction often have single-line paragraphs
(e.g., in dialogue).  Groff&#8217;s simplistic orphan control will
break these one-liners&mdash;if they fall at the bottom of the
page&mdash;to a new page, which is not what you want.
</p>

<div class="box-tip">
<p class="tip">
<span class="tip">Tip:</span>
If you would prefer not to clutter up your files with
<kbd>.PP</kbd>s, you can use groff&#8217;s &#8220;blank line
macro&#8221; to instruct groff to interpret blank lines as
<kbd>.PP</kbd>&#8217;s, like this:
<br/>
<span class="pre-in-pp">
  .blm PP
</span>
</p>
</div>

<div class="box-macro-args">
Macro: <b>PP</b>
</div>
<p>
<kbd>.PP</kbd> (on a line by itself, of course) tells mom to start a
new paragraph.  See
<a href="#pp-intro">above</a>
for more details.  In addition to regular text paragraphs, you can
use PP in
<a href="#epigraph-intro">epigraphs</a>,
<a href="#blockquote-intro">blockquotes</a>,
<a href="#endnote-intro">endnotes</a>
and
<a href="#footnote-intro">footnotes</a>.
</p>

<div class="defaults-container" style="background-color: #ded4bd; border: none;">
<h3 id="pp-control" class="docs defaults">PP control macros and defaults</h3>

<p class="defaults">
The PP macro being so important, and representing, as it were, the
basis of everything that goes on in a document, its control is
managed in a manner somewhat different from other document element
tags.  As a result, the control macros for PP may not be
<a href="#grouping">grouped</a>
within a <kbd>_STYLE</kbd> macro.
</p>

<ol style="margin-top: .5em; padding-bottom: .5em;">
  <li><a href="#pp-family">Family control</a></li>
  <li><a href="#pp-font">Font control</a></li>
  <li><a href="#pp-color">Paragraph colour</a></li>
  <li><a href="#pp-leading">Leading/linespacing control</a></li>
  <li><a href="#pp-just-quad">Justification/quad control</a></li>
  <li><a href="#para-indent">First-line indent control</a></li>
  <li><a href="#para-indent-first">Initial paragraphs indent control</a></li>
  <li><a href="#pp-space">Inter-paragraph spacing</a></li>
</ol>
</div>

<h4 id="pp-family" class="docs" style="margin-top: -1.5em;">1. Family control</h4>

<p>
The paragraph
<a href="definitions.html#family">family</a>
is set with
<a href="typesetting.html#family">FAMILY</a>
prior to
<a href="docprocessing.html#start">START</a>,
or
<a href="docprocessing.html#doc-family">DOC_FAMILY</a>
afterwards.  Please note that both globally affect the family of
every element in the document.
</p>

<p>
If you wish to change the family for regular text paragraphs only,
invoke <kbd>.FAMILY</kbd> immediately after <kbd>.PP</kbd> in every
paragraph whose family you wish to differ from the prevailing
document family.  Alternatively, set the family and font for
paragraphs with PP_FONT, giving it a complete family+font name, e.g.,
<br/>
<span class="pre-in-pp">
  PP_FONT TI
</span>
which would make the font used in paragraphs Times Roman Italic.
</p>

<p>
Mom&#8217;s default paragraph (and document) family is Times Roman.
</p>

<div class="box-tip">
<p class="tip">
<span class="note">Note:</span>
Neither FAMILY nor DOC_FAMILY has any effect when the PRINTSTYLE is
<kbd>TYPEWRITE</kbd>.
</p>
</div>

<h4 id="pp-font" class="docs" style="margin-top: -.25em;">2. Font control</h4>

<p>
To change the
<a href="definitions.html#font">font</a>
used in regular text paragraphs, use PP_FONT, which takes the same
argument as
<a href="typesetting.html#font">FT</a>.
PP_FONT may be used before or after
<a href="docprocessing.html#start">START</a>.
Only regular text paragraphs are affected; paragraphs in
<a href="#epigraph-intro">epigraphs</a>,
<a href="#blockquote-intro">blockquotes</a>,
<a href="#endnote-intro">endnotes</a>,
and
<a href="#footnote-intro">footnotes</a>
remain at their default setting (medium roman) unless you change
them with the appropriate control macros.
</p>

<p>
Mom&#8217;s default paragraph font is medium roman.
</p>

<div class="box-tip">
<p class="tip">
<span class="note">Note:</span>
PP_FONT has no effect when the PRINTSTYLE is <kbd>TYPEWRITE</kbd>.
If you wish to set whole typewritten paragraphs in italic, invoke
invoke <kbd>.FT I</kbd> immediately after <kbd>.PP</kbd>.  Depending
on which of
<a href="docprocessing.html#printstyle-italics">UNDERLINE_ITALIC</a>
or
<a href="docprocessing.html#printstyle-italics">ITALIC_MEANS_ITALIC</a>
is currently enabled, the paragraph will be set underlined or in
italic.  Neither persists past the end of the paragraph.
</p>
</div>

<h4 id="pp-color" class="docs" style="margin-top: -.25em;">3. Paragraph colour</h4>

<p>
Mom has no special control macro for colourizing paragraphs.  If you
wish a colourized paragraph, you must use the macro
<a href="color.html#color">COLOR</a>
or the
<a href="definitions.html#inline">inline escape</a>,
<a href="color.html#color-inline"><kbd>\*[&lt;colourname&gt;]</kbd></a>,
<i>after</i> <kbd>.PP</kbd>.  The colour must be one pre-defined (or
&#8220;initialized&#8221;) with
<a href="color.html#newcolor">NEWCOLOR</a>
or
<a href="color.html#xcolor">XCOLOR</a>.
</p>

<p>
Please note that unless you change the colour back to it&#8217;s
default (usually black) at the end of the paragraph, all subsequent
paragraphs will be set in the new colour, although most other
elements of your document will continue to be set in the default
colour (usually black).
</p>

<p>
For example, assuming you have defined the colour, blue,
<br/>
<span class="pre-in-pp">
  .PP
  .COLOR blue
  &lt;first paragraph&gt;
  .HEADING 1 "Monty Python"
  .HEADING 2 "The Origins of Spam"
  .PP
  &lt;second paragraph&gt;
</span>
the first paragraph will be blue, the head and subhead will be in
the document&#8217;s default colour (usually black), and the second
paragraph will be in blue.
</p>

<h4 id="pp-leading" class="docs" style="margin-top: -.25em;">4. Leading</h4>

<p>
The paragraph
<a href="definitions.html#leading">leading</a>
is set with
<a href="typesetting.html#leading">LS</a>
prior to
<a href="docprocessing.html#start">START</a>,
or
<a href="docprocessing.html#doc-lead">DOC_LEAD</a>
afterwards.  Please note that either method globally affects the
leading and spacing of every document element (except
<a href="definitions.html#header">headers</a>
and
<a href="definitions.html#footer">footers</a>).
</p>

<p>
If you wish to change the leading of regular text paragraphs only,
invoke <kbd>.LS</kbd> immediately after <kbd>.PP</kbd> in any
paragraph whose leading you wish to change.
</p>

<div class="box-tip">
<p class="tip">
<span class="note">Warning:</span>
Changing a paragraph&#8217;s leading will almost certaininly screw
up mom&#8217;s ability to balance the bottom margin of pages.
Should you absolutely require a change of paragraph&#8217;s leading and
need to get mom back on track leading-wise afterwards, use the
<a href="docprocessing.html#shim">SHIM</a>
or
<a href="docprocessing.html#shim">FLEX</a>
macro, depending on which
<a href="docprocessing.html#vertical-whitespace-management">vertical whitespace management</a>
strategy you are using.
</p>
</div>

<p>
Mom&#8217;s default paragraph leading (document leading)
is 16 points, adjusted to fill the page.
</p>

<h4 id="pp-just-quad" class="docs" style="margin-top: -.25em;">5. Justification/quad</h4>

<p>
The justification/quad-direction of regular text paragraphs (ie
<a href="definitions.html#just">justified</a>,
or
<a href="definitions.html#filled">filled</a>
and
<a href="definitions.html#quad">quadded</a>
left/right/centre) is set with
<a href="typesetting.html#justify">JUSTIFY</a>
or
<a href="typesetting.html#quad">QUAD</a>
prior to
<a href="docprocessing.html#start">START</a>,
and with
<a href="docprocessing.html#doc-quad">DOC_QUAD</a>
afterwards.
</p>

<p>
Please note that either method of setting the paragraph
justification/quad-direction also affects
<a href="#epigraph-intro">epigraphs</a>,
<a href="#footnote-intro">footnotes</a>,
and
<a href="#endnote-intro">endnotes</a>,
but not
<a href="#blockquote-intro">blockquotes</a>
(whose default is quad left unless you change it with
<a href="#blockquote">BLOCKQUOTE_QUAD</a>).
The justification/quad-direction of epigraphs and footnotes may be
changed with their own control macros.
</p>

<p>
If you wish to change the justification/quad-direction of individual
paragraphs, invoke
<a href="typesetting.html#justify"><kbd>.JUSTIFY</kbd></a>
or
<a href="typesetting.html#quad"><kbd>.QUAD</kbd></a>
on the line immediately after <kbd>.PP</kbd>.  Only the paragraph
in question gets justified or quadded differently; subsequent
paragraphs remain unaffected.
</p>

<p>
Mom&#8217;s default justification/quad-direction for paragraphs
when the
<a href="docprocessing.html#printstyle">PRINTSTYLE</a>
is <kbd>TYPESET</kbd> is justified; for PRINTSTYLE
<kbd>TYPEWRITE</kbd>, the default is quad left.
</p>

<h4 id="para-indent" class="docs" style="margin-top: -.25em;">6. First-line indent</h4>

<p>
The first-line indent of paragraphs is controlled by PARA_INDENT,
which takes one argument: the size of the indent. PARA_INDENT may be
used before or after
<a href="docprocessing.html#start">START</a>.
A
<a href="definitions.html#unitofmeasure">unit of measure</a>
is required; fractional sizes are allowed.  Thus, to set the
paragraph indent to 4-1/2
<a href="definitions.html#em">ems</a>, do
<br/>
<span class="pre-in-pp">
  .PARA_INDENT 4.5m
</span>
In addition to establishing the basic first line-indent of
paragraphs, PARA_INDENT also affects
<a href="#epigraph-intro">epigraphs</a>,
<a href="#quote-intro">quotes</a>
and
<a href="#blockquote-intro">blockquotes</a>,
whose overall indenting from the left and (where applicable)
right margins is relative to PARA_INDENT if
the _INDENT control macro for these tags has
no
<a href="definitions.html#unitofmeasure">unit of measure</a>
appended to it.  Furthermore, the first-line indent of paragraphs
within these document elements (as well as footnotes) is also
relative to PARA_INDENT (always 1/2 of PARA_INDENT), hence they are
also affected.
</p>

<p>
Mom&#8217;s default PARA_INDENT is 2 ems for
<a href="docprocessing.html#printstyle">PRINTSTYLE</a>
<kbd>TYPESET</kbd> and 3 picas (1/2 inch) for
<a href="docprocessing.html#printstyle">PRINTSTYLE</a>
<kbd>TYPEWRITE</kbd>.
</p>

<h4 id="para-indent-first" class="docs" style="margin-top: -.25em;">7. Indenting initial paragraphs</h4>

<p>
By default, mom does not indent the first paragraph of a document,
nor the first paragraph after a heading or
<a href="#linebreak-intro">linebreak</a>,
nor the first paragraphs of
<a href="#epigraph-intro">epigraphs</a>,
<a href="#blockquote-intro">blockquotes</a>,
<a href="#endnote-intro">endnotes</a>
or
<a href="#footnote-intro">footnotes</a>
that run to more than one paragraph.
</p>

<p>
If you wish to have first paragraphs indented, invoke the macro
<kbd>.INDENT_FIRST_PARAS</kbd> without an argument, either before or
after
<a href="docprocessing.html#start">START</a>.
INDENT_FIRST_PARAS is a toggle macro, therefore passing it any
argument (<b>OFF, QUIT, Q, X</b>...) cancels its effect, meaning
that first paragraphs will once again not be indented.
</p>

<h4 id="pp-space" class="docs">8. Inter-paragraph spacing</h4>

<p>
By default, mom does not insert a blank line between
paragraphs.  If you would like her to do so, invoke the macro
<kbd>.PARA_SPACE</kbd> without an argument, either before or after
<a href="docprocessing.html#start">START</a>.
PARA_SPACE is a toggle macro, therefore passing it any argument
(<b>OFF, QUIT, Q, X</b>...) cancels its effect, meaning that
paragraphs will once again not be separated by a blank line.
</p>

<p>
If you would like to space paragraphs by less than a full linespace,
invoke PARA_SPACE with the amount of space you want as a numeric
argument.  A
<a href="definitions.html#unitofmeasure">unit of measure</a>
is required.  For example, to space paragraphs by one-quarter
linespace
<span class="pre-in-pp">
  .PARA_SPACE .25v
</span>
is how you&#8217;d do it, or, if you want six points between
paragraphs
<span class="pre-in-pp">
  .PARA_SPACE 6p
</span>
</p>

<p style="margin-top: -1em" >
If
<a href="docprocessing.html#flex-vs-shim">flex-spacing</a>
is enabled, additional flexible vertical whitespace can be inserted
between spaced paragraphs with the
<a href="docprocessing.html#flex">FLEX</a>
macro.
</p>

<p>
PARA_SPACE is not recommended for use with PRINTSTYLE TYPEWRITE
unless you give PRINTSTYLE the <kbd>SINGLESPACE</kbd> option.
</p>

<div class="box-tip">
<p class="tip-top">
<span class="note">Note:</span>
If PARA_SPACE is on, mom spaces only those paragraphs that come
after an initial paragraph.  Initial paragraphs are those that come
immediately after the
<a href="definitions.html#docheader">docheader</a>
(ie the start of a document),
<a href="#epigraph-intro">epigraphs</a>,
<a href="#heading-intro">headings</a>,
and
<a href="#linebreak-intro">linebreaks</a>.
(The first paragraph after these document elements requires no
blank line to separate it from other paragraphs.)
</p>

<p class="tip-bottom">
Sometimes, you can be fairly deep into a document before using PP
for the first time, and when you do, because mom is still waiting
for that initial paragraph, she doesn&#8217;t space it with a blank
line, even though you expect her to.  The simple workaround for this
is to invoke <kbd>.PP</kbd> twice (in succession) at the point you
expect the blank line to appear.
</p>
</div>

<h2 id="heading-intro" class="macro-group">Headings</h2>

<ul style="margin-left: -.5em;">
  <li><a href="#heading">Tag: HEADING</a></li>
  <li><a href="#head-spacing-notes">Spacing of headings</a></li>
  <li><a href="#heading-control">Heading control macros and defaults</a></li>
  <li><a href="#prefix-chapter-number">Prefixing chapter numbers</a></li>
  <li><a href="#oldstyle-headings">Oldstyle headings</a>
  <ul style="list-style-type: circle; margin-left: -1.25em">
    <li><a href="#parahead">Important information about PARAHEAD</a>
    <ul style="list-style-type: square; margin-left: -1.25em">
      <li><a href="#parahead-usage">Correct usage of paraheads</a></li>
    </ul></li>
  </ul></li>
</ul>

<p>
Heads, subheads, and deeper levels of section headings are handled by 
a single macro HEADING to which you pass an argument stating the
desired level.  <kbd>.HEADING 1 &quot;&lt;text&gt;&quot;</kbd>, for
example, would be a main head; <kbd>.HEADING 2
&quot;&lt;text&gt;&quot;</kbd> would be a subhead; etc.
</p>

<p>
In addition to printing headings in the body of your document,
HEADING collects the heading as an entry for the Table of Contents,
if the document is to have one, and the
<a href="definitions.html#pdfoutline">PDF outline</a>.
With the <kbd>NAMED</kbd> argument, it furthermore acts as a
bookmark for
<a href="definitions.html#pdflink">PDF links</a>.
</p>

<p>
Headings can also be numbered on a per-heading-level basis,
hierarchically and concatenatively, e.g.,
<br/>
<span class="pre-in-pp">
  1.
  1.1
  1.2
  1.2.1
  2.
  2.1
  2.2
  2.2.1
</span>
By default, a blank line precedes headings, regardless of the level.
Mom initially sets up a very basic style for nine levels of heading,
of which you can have an infinite number, although as has been said,
if you need more than four levels of heading, you should consider
re-organizing your material.  The pared-down style of mom&#8217;s
defaults is intentional; it is expected that you will design
headings to your own specifications with the
<a href="definitions.html#controlmacro">control macro</a>,
<a href="#heading-style">HEADING_STYLE</a>.
</p>

<p>
It is very good practice, and strongly recommended, that you respect
the hierarchy of headings, using level-1 for main heads, level-2 for
subheads, level-3 for subsubheads, etc.  The ease of designing and
re-designing the style for each level, plus mom&#8217;s very basic
defaults, are meant, in part, to prevent the whimsical misuse of
a particular heading level just because its style appeals to you.
</p>

<div class="macro-id-overline">
<h3 id="heading" class="macro-id">HEADING</h3>
</div>

<div class="box-macro-args">
Macro: <b>HEADING</b> <kbd class="macro-args">&lt;level&gt; [
PARAHEAD ] [ NAMED &lt;pdf-id&gt; ] &quot;&lt;heading text&gt;&quot;
</div>

<p>
The first argument to HEADING is the <kbd>level</kbd>.  Level 1 is
analogous to a main head; level 2 is analogous to a subhead; level 3
is analogous to a subsubhead; etc.
</p>

<p>
The second (optional) argument, <kbd>PARAHEAD</kbd>, instructs mom
that the heading should be treated as a
<a href="definitions.html#parahead">paragraph head</a>.
If HEADING is being used to create a parahead, it must come after
<a href="#pp">PP</a>,
not before.
</p>

<p>
The indent applied to a parahead is the same as what would be
expected from a paragraph without the parahead (see
<a href="#para-indent-first">Indenting initial paragraphs</a>).
If you wish that a paragraph introduced by a parahead not be
indented, use
<a href="#para-indent">PARA_INDENT</a>
to set the paragraph indent to zero, then reset the indent for
subsequent paragraphs.
</p>

<p>
The optional third argument, <kbd>NAMED &lt;id&gt;</kbd>, gives the
heading a unique, non-printing identifier that allows it to
referenced from anywhere in the final PDF document with the PDF_LINK
macro, provided the mom file is processed with
<a href="using.html#pdfmom" style="font-weight: bold">pdfmom</a>.
PDF_LINK usage is explained in the manual,
<a href="http://www.schaffter.ca/mom/pdf/mom-pdf.pdf"><span class="book-title">Producing PDFs with groff and mom</span></a>.
</p>

<p>
The final argument is the text of the heading, surrounded by double
quotes.  Long headings that are likely to exceed the current
line length should be broken into chunks, each surrounded by
double-quotes, like this:
<br/>
<span class="pre-in-pp">
  .HEADING 1 "A needlessly long but instructive" "first level heading"
</span>
</p>

<div class="box-tip">
<p class="tip">
<span class="note">Note:</span>
If a heading falls near the bottom of an output page and mom is
unable to fit the heading plus at least one line of text underneath
it, she will set the head at the top of the next page.
</p>
</div>

<div class="box-tip">
<h3 id="head-spacing-notes" class="docs" style="padding-top: 9px; font-size: 100%; text-transform: none">Spacing of headings</h3>

<p>
As described above, mom inserts a blank line before each heading.
If the leading of your document never changes, and you introduce no
additional space into the text&mdash;as, for example, between
paragraphs&mdash;this will result in perfectly equal whitespace before
each heading.
</p>

<p>
If, however, you disrupt the regular placement of text on
mom&#8217;s
<a href="definitions.html#baseline-grid">baseline grid</a>,
HEADING adds extra whitespace to the blank line according to the
<a href="docprocessing.html#vertical-whitespace-management">vertical whitespace management</a>
strategy in effect.  This, along with a similar strategy for
whitespace around quotes, blockquotes, and
<a href="definitions.html#float">floated</a>
and
<a href="definitions.html#preprocessor">pre-processor material</a>
is what allows mom to balance the bottom
margins of pages effectively.
</p>

<p>
It occasionally happens that the extra whitespace becomes
noticeable.  This typically occurs when the amount of whitespace
adjustment approaches the value of the current leading.  The result
looks like two blank lines instead of one.  When this happens, a
simple but effective fix is to reduce the space before the heading
by backing up one line, either with
<br/>
<span class="pre-in-pp">
  .SPACE -1v
</span>
or
<br/>
<span class="pre-in-pp">
  .RLD -1v
</span>
This results in slightly less whitespace than normal, but the
difference is usually not apparent.  Alternatively, you may pass the
<kbd>NO_SHIM</kbd> or <kbd>NO_FLEX</kbd> argument to
<a href="#heading-style">HEADING_STYLE</a>
to prevent shimming or flex-spacing of any particlar heading level
either globally or selectively.  If shimming/flex-spacing is
disabled selectively with
<br/>
<span class="pre-in-pp">
  .HEADING_STYLE &lt;n&gt; NO_SHIM | NO_FLEX
</span>
it can be re-enabled for the heading level with
<br/>
<span class="pre-in-pp">
  .HEADING_STYLE &lt;n&gt; SHIM | FLEX
</span>
</p>
</div>

<div class="defaults-container" style="background-color: #ded4bd; border: none;">
<h3 id="heading-control" class="defaults" style="margin-left: 6px; margin-bottom: -1em">HEADING control and defaults</h3>

<div style="padding-left: 15px; padding-right: 15px">
<p style="margin-bottom: 1em">
By default, mom pre-initializes nine levels of headings to use
the bold font of the prevailing document family, with a baseline
adjustment of 1/10 of the current
<a href="definitions.html#leading">leading</a>.
In addition, level-1 headings are 3 points larger than running text,
level-2 headings 2 points larger, and level 3-headings 1 point
larger.  The remaining 6 levels are the same size as running text.
A single blank line precedes all levels of heading.
</p>

<h4 id="heading-style" class="docs" style="margin-bottom: -.5em">The HEADING_STYLE macro</h4>

<p>
Styling heads is accomplished with a single macro
<br/>
<span class="pre-in-pp">
  .HEADING_STYLE&nbsp;&lt;level&gt;
</span>
where <kbd>&lt;level&gt;</kbd> is the numeric heading level to which
the style applies.
</p>

<p>
HEADING_STYLE takes any or all of the following arguments,
which may be given in any order:
<br/>
<span class="pre defaults">
  FAMILY &lt;family&gt; \
  FONT   &lt;font&gt; \
  SIZE   &lt;+|-size&gt; \
  QUAD   &lt;direction&gt; \
  COLOR  &lt;colour&gt; \
  UNDERSCORE  &lt;weight&gt; &lt;gap&gt; | NO_UNDERSCORE \
  UNDERSCORE2 &lt;weight&gt; &lt;gap1&gt; &lt;gap2&gt; | NO_UNDERSCORE2 \
  CAPS | NO_CAPS \
  SMALLCAPS | NO_SMALLCAPS \
  BASELINE_ADJUST &lt;amount to raise heading from the baseline&gt; \
  NEEDS &lt;lines of text required beneath the heading &gt;
  SPACE_AFTER | NO_SPACE_AFTER \
  NUMBER | NO_NUMBER \
  NO_SHIM | SHIM \
  NO_FLEX | FLEX
</span>
</p>

<p>
You may enter your entire argument list on a single line, or, if it
is very long, break it into shorter lines with the
&#8220;line-continued&#8221; backslash {<kbd>\</kbd>), as shown
above.
</p>

<p class="defaults" style="margin-bottom: 1em">
The arguments to <kbd>FAMILY</kbd>, <kbd>FONT</kbd>,
<kbd>SIZE</kbd>, <kbd>QUAD</kbd>, and
<kbd>COLOR</kbd> are the same as
those you&#8217;d give to the
<a href="#docelement-control">control macros</a>
ending in _FAMILY, _FONT, _SIZE, _QUAD, or _COLOR.  See
<a href="#control-macro-args">Arguments to the control macros</a>.
</p>

<p class="defaults" style="margin-bottom: 1em">
<kbd>UNDERSCORE</kbd> and <kbd>UNDERSCORE2</kbd> require that a
weight for the underscore be given, in points (decimal fractions
allowed), but without the unit of measure <kbd>p</kbd> appended.
They also require that the underscore's distance from the baseline
be supplied; in the case of UNDERSCORE2, an additional gap argument
representing the distance between the two underscores must be
provided.
</p>

<p class="defaults" style="margin-bottom: 1em">
The <kbd>CAPS</kbd> argument capitalizes the text of a heading
level in the body of a document but not in the Table of
Contents, where capitalization of entries is controlled by
<a href="tables-of-contents.html#toc-entry-style">TOC_ENTRY_STYLE&nbsp;&lt;n&gt;</a>.
</p>

<p class="defaults" style="margin-bottom: 1em">
<kbd>BASELINE_ADJUST</kbd> allows you to raise a heading slightly
above the baseline on which it would otherwise sit.  For aesthetic
reasons, it is often desirable to introduce a small amount of space
between a heading and the text following it.  Since headings are
preceded by a blank line, it is preferable to move the heading
upward than to lower the text following it.  The argument to
BASELINE_ADJUST is the amount by which to raise the heading.  It
requires no <kbd>+</kbd> or <kbd>-</kbd> sign, and must have a
<a href="definitions.html#unitofmeasure">unit of measure</a>
appended to it.
</p>

<p class="defaults" style="margin-bottom: 1em">
<kbd>NEEDS</kbd> lets you reserve the number of lines of text
required beneath a heading, including fractions thereof (e.g.,
&#8220;1.5&#8221; for one line of text plus half a linespace).
If a heading falls near the bottom margin and there isn&#8217;t
sufficient room for both the heading and the reserved space, mom
will break to a new page for the heading.  A
<a href="definitions.html#unitofmeasure">unit of measure</a>
should not be appended to the argument.
</p>

<p class="defaults" style="margin-bottom: 1em">
<kbd>SPACE_AFTER</kbd> inserts a blank line equal to the current
<a href="definitions.html#leading">leading</a> after a HEADING.
If you'd like a full linespace after a heading level, use
<kbd>SPACE_AFTER</kbd>.  If you'd like additional space before a
heading level, you must introduce it yourself with
<a href="typesetting.html#space">SPACE</a>
or
<a href="typesetting.html#ald">ALD</a>.
</p>

<p class="defaults" style="margin-bottom: 1em">
<kbd>NUMBER</kbd> and <kbd>NO_NUMBER</kbd> allow you to determine
whether mom prepends a hierarchic numbering scheme to a heading
level in the body of a document.  Numbering of Table of Contents
entries is controlled separately with
<a href="tables-of-contents.html#toc-entry-numbers">TOC_ENTRY_NUMBERS</a>.
Mom also has a special macro to toggle whether to prefix a chapter
number to numbered headings and Table of Contents entries,
<a href="#prefix-chapter-number">PREFIX_CHAPTER_NUMBER</a>.
</p>

<p class="defaults" style="margin-bottom: 1em">
<kbd>SHIM</kbd> is not necessary if shimming is enabled
globally, which it is by default; it exists to re-enable
shimming for the heading level if you have previously passed
HEADING_STYLE&nbsp;<kbd>&lt;n&gt;</kbd> a <kbd>NO_SHIM</kbd>
argument.  The <kbd>FLEX</kbd> and <kbd>NO_FLEX</kbd> arguments work
the same way if flex-spacing is enabled.
</p>

<p class="defaults" style="padding-bottom: .5em">
The argument list is long, so you may want to break it into
several lines by using the backslash character (<kbd>\</kbd>).
Here's an example of how you might style a level 1 heading:
<br/>
<span class="pre defaults">
  .HEADING_STYLE 1 \
  FONT B \
  QUAD C \
  UNDERSCORE .5 2p \
  BASELINE_ADJUST 3p \
  NUMBER
</span>
This creates a level-1 heading style that's bold, centred,
underscored and numbered, raised by 3 points from the baseline.
</p>
</div>
</div>

<div id="prefix-chapter-number" class="macro-id-overline" style="margin-top: -1em;">
<h3 class="macro-id" style="text-transform: none; font-size: 105%;">Prefixing chapter numbers</h3>
</div>

<div class="box-macro-args">
Macro: <b>PREFIX_CHAPTER_NUMBER</b> <kbd class="macro-args">&lt;none&gt; | &lt;chapter number as digit&gt; | &lt;anything&gt;</kbd>
</div>

<p>
If you&#8217;ve requested numbering for any level of heading and
you&#8217;d like mom, in addition, to prefix a chapter number to the
numbering scheme, you can do so with PREFIX_CHAPTER_NUMBER.
</p>

<p>
After you invoke <kbd>.PREFIX_CHAPTER_NUMBER</kbd>, mom will prepend
the current chapter number to all headings you have requested be
numbered with
<a href="#heading-style"><kbd>.HEADING_STYLE &lt;n&gt; NUMBER</a>.
Thus, assuming chapter number twelve (12):
<br/>
<span class="pre-in-pp">
  1.   LEVEL 1 HEADING
  1.1. Level 2 heading
</span>
would become
<br/>
<span class="pre-in-pp">
  12.1.   LEVEL 1 HEADING
  12.1.1. Level 2 heading
</span>
</p>

<p>
When you invoke <kbd>.PREFIX_CHAPTER_NUMBER</kbd> without an
argument, mom checks to see whether the argument you passed to
<a href="docprocessing.html#chapter">CHAPTER</a>
is a digit.  If it is, she immediately starts pre-pending the
current chapter number to numbered head elements.  If it isn&#8217;t
(say you&#8217;ve called your chapter &#8220;One&#8221; instead
of &#8220;1&#8221;), mom will abort with a request that you pass
PREFIX_CHAPTER_NUMBER a digit representing the current chapter
number.
</p>

<p>
In collated documents, mom automatically increments
the digit used by PREFIX_CHAPTER_NUMBER by one
(current chapter digit + 1) every time you invoke <a
href="rectoverso.html#collate"><kbd>.COLLATE</kbd></a>, even if
you&#8217;ve (temporarily) turned off the prefixing of chapter
numbers.  Thus, even if you call your chapters &#8220;One&#8221;,
&#8220;Two&#8221;, &#8220;Three&#8221; instead of &#8220;1&#8221;,
&#8220;2&#8221;, &#8220;3&#8221;, mom will Do The Right Thing
with respect to numbering head elements in all collated chapters
following the first invocation of PREFIX_CHAPTER_NUMBER (assuming,
of course, that the collated chapters are in incrementing order; if
not, you must must put
<br/>
<span class="pre-in-pp">
  .PREFIX_CHAPTER_NUMBER &lt;chapter number&gt;
</span>
somewhere after the invocation of COLLATE and before the first
numbered head element of each collated document).
</p>

<p>
PREFIX_CHAPTER_NUMBER can be disabled by passing it any argument
other than a digit (e.g., <b>OFF, QUIT, END, X</b>, etc), although,
as noted above, mom will keep, and&mdash;in the case of collated
documents&mdash;increment the chapter number, allowing you to turn
prefixing of chapter numbers to numbered head elements off and on
according to your needs or whims.
</p>

<p>
<span class="note">Note:</span>
Because PREFIX_CHAPTER_NUMBER takes an (optional) digit representing
the chapter number, it&#8217;s use need not be restricted to
<a href="docprocessing.html#doctype">DOCTYPE <kbd>CHAPTER</kbd></a>.
You can use it with any document type.  Furthermore, even if
your doctype isn&#8217;t <kbd>CHAPTER</kbd>, you can identify
the document as a chapter for the purposes of numbering head
elements by invoking the macro
<a href="docprocessing.html#chapter"><kbd>.CHAPTER</kbd></a>
with a
<a href="definitions.html#numericargument">numeric argument</a>
in your document setup. 
</p>

<h2 id="oldstyle-headings-intro" class="macro-group">Oldstyle headings</h2>

<ul style="margin-left: -.5em;">
  <li><a href="#oldstyle-headings">Macro: OLDSTYLE_HEADINGS</a></li>
  <li><a href="#head">Macro: HEAD</a></li>
  <li><a href="#subhead">Macro: SUBHEAD</a></li>
  <li><a href="#subsubhead">Macro: SUBSUBHEAD</a></li>
</ul>

<p>
In versions of mom prior to 2.0, headings were entered by their
commonly used names, <i>viz.</i> HEAD, SUBHEAD, and SUBSUBHEAD. The
new
<a href="#heading-intro">HEADING</a>
scheme allows for greater flexibility, and permits seamless
integration with PDF output.
</p>

<p>
Documents created with pre-2.0 versions may still use the oldstyle
heading names, as may new documents, however there are some
differences in their behaviour.
</p>

<p>
Whenever mom encounters an oldstyle heading, she loads the default
style formerly associated with the oldstyle name.  See below for a
description of the default styles in the sections
<a href="#head">HEAD</a> (now HEADING 1),
<a href="#subhead">SUBHEAD</a> (now HEADING 2),
and
<a href="#subsubhead">SUBSUBHEAD</a> (now HEADING 3).
Mom also emits a message to stderr alerting you to what she's doing.
</p>

<p>
The control macros formerly associated with oldstyle headings are no
longer present in mom's macro file, which means that if you
made changes to mom's default for those headings, you must recreate
the changes with the
<a href="#heading-style">HEADING_STYLE</a>
macro.  The entire style need not be recreated, only those
parameters that differed from mom's defaults.  Thus, if your HEADs
were set flush left, instead of the oldstyle default, centred, but
otherwise kept mom's settings, you need only do
<br/>
<span class="pre-in-pp">
  .HEADING_STYLE 1 QUAD L
</span>
</p>

<div id="parahead" class="box-important">
<p class="tip-top">
<span class="important">Important:</span>
The macro PARAHEAD is no longer available.  You must create paragraph
heads using the
<a href="#heading">HEADING</a>
macro.  Mom will abort with an informational message whenever she
encounters PARAHEAD. Assuming a heading level of 3 for your
paraheads, the former defaults for PARAHEAD can be set up like this:
<br/>
<span class="pre-in-pp">
  .HEADING STYLE 3 FONT BI SIZE -.25 \" For PRINTSTYLE TYPESET
  .HEADING STYLE 3 FONT I SIZE +0    \" For PRINTSTYLE TYPEWRITE
</span>
Equally, the macro NUMBER_PARAHEADS is no longer available.  You
must enable numbering of the correct level for paraheads with
HEADING_STYLE.  Again assuming a heading level of 3 for paraheads,
it's simply done:
<br/>
<span class="pre-in-pp">
  .HEADING_STYLE 3 NUMBER
</span>
</p>

<h3 id="parahead-usage" class="docs" style="text-transform: none; margin-top: -1em">Correct usage of paraheads</h3>

<p style="margin-top: .5em">
It is tempting to choose an arbitrary heading level for paraheads,
since they are sometimes needed out-of-sequence; for example,
immediately after a main head (level-1) in a document that
subsequently requires subheads (level-2).  In such a circumstance,
choosing level-3 for all your paraheads might seem to make sense,
but in fact doesn&#8217;t, since it disrupts the hierarchy of
both the Table of Contents (if your document has one) and the PDF
outline.
</p>

<p>
Correct use of the <kbd>PARAHEAD</kbd> option to HEADING under such
circumstances requires always assigning <kbd>PARAHEAD</kbd> to
the next logical level in the heading hierarchy.  For example, if
there are no headings before the parahead, it should be assigned to
level-1.  If subsequently there is a main head to be followed by
more paraheads, the main head should be level-1, and the paraheads
level-2.  This will almost certainly require assigning new style
parameters to level-1 (with
<a href="#heading-style">HEADING_STYLE</a>)
and to the level now being used for paraheads.  The following
example demonstrates.
<br/>
<span class="pre-in-pp">
  .HEADING_STYLE 1 FONT BI SIZE +.25 \" parahead style, level-1
  .PP
  .HEADING 1 PARAHEAD &lt;parahead&gt;
  &lt;paragraph text&gt;
  .PP
  .HEADING 1 PARAHEAD &lt;parahead&gt;
  &lt;paragraph text&gt;
  \# main head style, level-1
  .HEADING_STYLE 1 FONT B SIZE +3 QUAD CENTER UNDERSCORE .5 2p
  .HEADING_STYLE 2 FONT BI SIZE +.25 \" parahead style, level-2
  .HEADING 1 &lt;main head&gt;
  .PP
  &lt;paragraph text&gt;
  .PP
  .HEADING 2 PARAHEAD &lt;parahead&gt;
  &lt;paragraph text&gt;
</span>
</p>
</div>

<div class="macro-id-overline">
<h3 id="oldstyle-headings" class="macro-id">OLDSTYLE HEADINGS</h3>
</div>

<div class="box-macro-args">
Macro: <b>OLDSTYLE_HEADINGS</b>
</div>

<p>
OLDSTYLE_HEADINGS requires no argument.  It instructs mom to set the
first three levels of heading to the parameters of her old defaults
for HEAD, SUBHEAD, and SUBSUBHEAD.  Use of OLDSTYLE_HEADINGS will
also prevent mom from generating the message she issues the first
time she encounters HEAD, SUBHEAD, and SUBSUBHEAD.
</p>

<div id="head" class="box-macro-args">
Macro: <b>HEAD</b> <kbd class="macro-args">[ NAMED &lt;id&gt; ] &quot;&lt;text of head&gt;&quot; &quot;&lt;another line&gt;&quot;...</kbd>
</div>

<p>
When invoked for the first time, with or without
<a href="oldstyle-headings">OLDSTYLE_HEADINGS</a>,
HEAD sets the parameters for level-1 headings to mom&#8217;s old
HEAD defaults, then prints the head as a level-1 heading.
The <kbd>NAMED &lt;id&gt;</kbd> optional argument is explained in
the description of
<a href="#heading">HEADING</a>.
</p>

<p>
If, prior to invoking HEAD, you have given any parameters to level-1
heads with
<a href="#heading-style">HEADING STYLE</a>,
they will be preserved; any you give afterwards will be respected.
</p>

<p>
The former style defaults for HEAD were:
<br/>
<span class="pre-in-pp">
  FAMILY     = prevailing document family
  FONT       = bold (TYPESET); roman (TYPEWRITE)
  SIZE       = +1 (TYPESET); +0 (TYPEWRITE)
  QUAD       = C 
  UNDERSCORE .5 2p
  CAPS
</span>
</p>

<div class="box-tip">
<p class="tip">
<span class="note">Note:</span>
The macro NUMBER_HEADS from pre-2.0 versions of mom, can still be
used, though it is now a wrapper for
<br/>
<span class="pre-in-pp">
  .HEADING_STYLE 1 NUMBER
</span>
Mom will alert you to this on stderr.
</p>
</div>

<div id="subhead" class="box-macro-args">
Macro: <b>SUBHEAD</b> <kbd class="macro-args">[ NAMED &lt;id&gt; ] &quot;&lt;text of head&gt;&quot; &quot;&lt;another line&gt;&quot;...</kbd>
</div>

<p>
When invoked for the first time, with or without
<a href="oldstyle-headings">OLDSTYLE_HEADINGS</a>,
SUBHEAD sets the parameters for level-2 headings to mom&#8217;s old
SUBHEAD defaults, then prints the subhead as a level-2 heading.
The <kbd>NAMED &lt;id&gt;</kbd> optional argument is explained in
the description of
<a href="#heading">HEADING</a>.
</p>

<p>
The former style defaults for SUBHEAD were:
<br/>
<span class="pre-in-pp">
  FAMILY          = prevailing document family
  FONT            = bold (TYPESET); italic, ie underlined (TYPEWRITE)
  SIZE            = +.5 (TYPESET); +0 (TYPEWRITE)
  QUAD            = L 
  BASELINE_ADJUST = 1/8 the current leading
</span>
</p>

<div class="box-tip">
<p class="tip">
<span class="note">Note:</span>
The macro NUMBER_SUBHEADS from pre-2.0 versions of mom, can still be
used, though it is now a wrapper for
<br/>
<span class="pre-in-pp">
  .HEADING_STYLE 2 NUMBER
</span>
Mom will alert you to this on stderr.
</p>
</div>

<div id="subsubhead" class="box-macro-args">
Macro: <b>SUBSUBHEAD</b> <kbd class="macro-args">[ NAMED &lt;id&gt; ] &quot;&lt;text of head&gt;&quot; &quot;&lt;another line&gt;&quot;...</kbd>

</div>

<p>
When invoked for the first time, with or without
<a href="oldstyle-headings">OLDSTYLE_HEADINGS</a>,
SUBSUBHEAD sets the parameters for level-3 headings to mom&#8217;s old
SUBSUBHEAD defaults, then prints the subsubhead as a level-3 heading.
The <kbd>NAMED &lt;id&gt;</kbd> optional argument is explained in
the description of
<a href="#heading">HEADING</a>.
</p>

<p>
The former style defaults for SUBSUBHEAD were:
<br/>
<span class="pre-in-pp">
  FAMILY          = prevailing document family
  FONT            = italic (TYPESET); roman (TYPEWRITE)
  SIZE            = +.5 (TYPESET); +0 (TYPEWRITE)
  QUAD            = L 
  BASELINE_ADJUST = 1/8 the current leading
</span>
</p>

<div class="box-tip">
<p class="tip">
<span class="note">Note:</span>
The macro NUMBER_SUBSUBHEADS from pre-2.0 versions of mom, can still be
used, though it is now a wrapper for
<br/>
<span class="pre-in-pp">
  .HEADING_STYLE 3 NUMBER
</span>
Mom will alert you to this on stderr.
</p>
</div>

<h2 id="linebreak-intro" class="macro-group">Linebreaks (section breaks)</h2>

<ul style="margin-left: -.5em;">
  <li><a href="#linebreak">Tag: LINEBREAK</a></li>
  <li><a href="#linebreak-control">Linebreak control macros and defaults</a></li>
</ul>

<p>
Linebreaks (&#8220;author linebreaks&#8221;, &#8220;section
breaks&#8221;) are gaps in the vertical flow of running text that
indicate a shift in content (e.g., a scene change in story).  They
are frequently set off by typographic symbols, sometimes whimsical
in nature.
</p>

<div class="macro-id-overline">
<h3 id="linebreak" class="macro-id">LINEBREAK</h3>
</div>

<div class="box-macro-args">
Macro: <b>LINEBREAK</b>
</div>
<p class="alias" style="margin-bottom: 0;">
<i>Alias:</i> <b>SECTION</b>
</p>

<p>
LINEBREAK takes no arguments.  Simply invoke it (on a line by
itself, of course) whenever you want to insert an author linebreak.
</p>

<div class="defaults-container" style="background-color: #ded4bd; border: none;">
<h3 id="linebreak-control" class="docs defaults">LINEBREAK control macros and defaults</h3>

<p class="defaults">
By default, mom marks
<a href="definitions.html#linebreak">author linebreaks</a>
with three centred asterisks (stars) in the prevailing colour of the
document (by default, black).  You can alter this with the control
macros
</p>
<ol style="margin-top: .5em; padding-bottom: .5em;">
  <li><a href="#linebreak-char">LINEBREAK_CHAR</a></li>
  <li><a href="#linebreak-color">LINEBREAK_COLOR</a></li>
</ol>
</div>

<h4 id="linebreak-char" class="docs" style="margin-top: -1.5em; margin-bottom: .5em;">1. Linebreak character</h4>
<div class="box-macro-args">
Macro: <b>LINEBREAK_CHAR</b> <kbd class="macro-args">[ &lt;character&gt; ] [ &lt;iterations&gt; [ &lt;vertical adjustment&gt; ] ]</kbd>
</div>

<p class="alias" style="margin-bottom: 0;">
<i>Alias:</i> <b>SECTION_CHAR</b>
</p>
<p class="requires">
&bull;&nbsp;The third optional argument requires a
<a href="definitions.html#unitofmeasure">unit of measure</a>.
</p>

<p>
LINEBREAK_CHAR determines what mom prints when LINEBREAK is invoked.
It takes 3 optional arguments: the character you want deposited at
the line break, the number of times you want the character repeated,
and a vertical adjustment factor.
</p>

<p>
The first argument is any valid groff character (e.g., <kbd>*</kbd>
[an asterisk], <kbd>\[dg]</kbd> [a dagger], <kbd>\f[ZD]\N'141\fP</kbd>
[an arbitrary character from Zapf Dingbats], <kbd>\l'4P'</kbd> [a
4-pica long rule]). Mom sets the character centred on the current
line length.  (See <kbd>man groff_char</kbd> for a list of all
valid groff characters.)
</p>

<p>
The second argument is the number of times to repeat the character.
</p>

<p>
The third argument is a +|-value by which to raise (+) or lower (-)
the character in order to make it appear visually centred between
sections of text.  This lets you make vertical adjustments to
characters that don&#8217;t sit on the
<a href="definitions.html#baseline">baseline</a>
(such as asterisks).  The argument must be preceded by a plus or
minus sign, and must include a unit of measure.
</p>

<p>
If you enter LINEBREAK_CHAR with no arguments, sections of
text will be separated by two blank lines when you invoke
<kbd>.LINEBREAK</kbd>.
</p>

<p>
Mom&#8217;s default for LINEBREAK_CHAR is
<br/>
<span class="pre-in-pp">
  .LINEBREAK_CHAR * 3 -3p
</span>
ie three asterisks, lowered 3 points from their normal vertical
position (for
<a href="docprocessing.html#printstyle">PRINTSTYLE <kbd>TYPESET</kbd></a>;
the vertical adjustment is -2 points for
<a href="docprocessing.html#printstyle">PRINTSTYLE <kbd>TYPEWRITE</kbd></a>).
</p>

<h4 id="linebreak-color" class="docs" style="margin-top: -.25em; margin-bottom: .5em;">2. Linebreak colour</h4>

<div class="box-macro-args">
Macro: <b>LINEBREAK_COLOR</b> <kbd class="macro-args">&lt;colourname&gt;</kbd>
</div>
<p class="alias" style="margin-bottom: 0;">
<i>Alias:</i> <b>SECTION_COLOR</b>
</p>

<p>
To change the colour of the linebreak character(s), simply invoke
<kbd>.LINEBREAK_COLOR</kbd> with the name of a colour pre-defined
(or &#8220;initialized&#8221;) with
<a href="color.html#newcolor">NEWCOLOR</a>
or
<a href="color.html#xcolor">XCOLOR</a>.

</p>

<h2 id="quote-intro" class="macro-group">Quotes (line for line, poetry or code)</h2>

<ul style="margin-left: -.5em;">
  <li><a href="#quote-description">Introduction</a>
  <ul style="margin-left: -1.25em">
    <li><a href="#quote-spacing">Quote spacing</a>
    <ul style="margin-left: -1.25em">
      <li><a href="#quote-spacing-notes">Notes on quote spacing</a></li>
    </ul></li>
    <li><a href="#no-shim">Disable shimming of quotes and blockquotes</a></li>
    <li><a href="#float-quote">Keeping quotes and blockquotes together as a block</a></li>
    <li><a href="#label-caption">Labelling/captioning quotes and blockquotes</a></li>
  </ul></li>
  <li><a href="#quote">Tag: QUOTE</a></li>
  <li><a href="#quote-control">Quote control macros and defaults</a></li>
</ul>

<p id="quote-decription">
<a href="definitions.html#quote">Quotes</a>
are always set in
<a href="definitions.html#filled">nofill mode</a>,
flush left.  This permits entering quotes on a line for line basis
in your text editor and have them come out the same way on output
copy.  (See
<a href="#blockquote-intro">Blockquotes</a>
for how quotes, in the present sense, differ from longer passages of
cited text.)
</p>

<p>
Since mom originally came into being to serve the needs of creative
writers (ie novelists, short story writers, etc.&mdash;not
to cast aspersions on the creativity of mathematicians and
programmers), she sets quotes in italics
<a href="docprocessing.html#printstyle">(PRINTSTYLE <kbd>TYPESET</kbd>)</a>
or underlined
<a href="docprocessing.html#printstyle">(PRINTSTYLE <kbd>TYPEWRITE</kbd>)</a>,
indented from the left margin.  Obviously, she&#8217;s thinking
&#8220;quotes from poetry or song lyrics&#8221;, but with the
<a href="#quote-control">QUOTE control macros</a>
you can change her defaults so QUOTE serves other needs, e.g.,
entering verbatim snippets of programming code, command-line
instructions, and so on.  (See the
<a href="#code">CODE</a>
for a convenience macro to assist in including code snippets in
documents.)
</p>

<h3 id="quote-spacing" class="docs">QUOTE spacing</h3>

<p>
Besides indenting quotes, mom further sets them off from
<a href="definitions.html#running">running text</a>
with a small amount of vertical whitespace top and bottom.  In
<a href="docprocessing.html#printstyle">PRINTSTYLE <kbd>TYPEWRITE</kbd></a>,
this is always one full linespace.  In
<a href="docprocessing.html#printstyle">PRINTSTYLE <kbd>TYPESET</kbd></a>,
it&#8217;s 1/2 of the prevailing
<a href="definitions.html#leading">leading</a>
if the quote fits fully on the page (ie with running text above
and below it), otherwise it&#8217;s a full linespace either above
or below as is necessary to balance the page to the bottom margin.
This behaviour can be changed with the control macro
<a href="#always-fullspace-quotes">ALWAYS_FULLSPACE_QUOTES</a>.
</p>

<div class="box-tip">
<h3 id="quote-spacing-notes" class="docs" style="padding-top: 9px; font-size: 95%;">Notes on quote spacing</h3>

<p style="margin-top: .5em">
If your quote (or blockquote) leading differs from the document
leading, mom attempts to observe the same rules for vertical
whitespace outlined above; however, she will also insert a small,
flexible amount of extra whitespace
(<a href="docprocessing.html#shim-vs-flex">shim or flex-spacing</a>)
around the quotes to make sure the whitespace is equal, top and
bottom.  When shimming is enabled, this may result in multiple
quotes or blockquotes on the same page being spaced slightly
differently.
</p>

<h4 id="no-shim" class="docs">Disable shimming/flex-spacing of quotes and blockquotes</h4>

<p class="tip-bottom">
If you don&#8217;t want the behaviour
described above (ie you don&#8217;t want mom putting additional shim
or flex-spacing around quotes and
blockquotes), put <kbd>.NO_SHIM</kbd> or/and <kbd>.NO_FLEX</kbd>
in the style sheet section of your document (ie after PRINTSTYLE
but before START), which will disable shimming or/and flex-spacing
globally for all tags, or disable shimming/flex-spacing
on a per-instance basis prior to <kbd>.QUOTE</kbd> or
<kbd>.BLOCKQUOTE</kbd>, re-enabling it after the terminating
<kbd>.QUOTE&nbsp;OFF</kbd> or <kbd>.BLOCKQUOTE&nbsp;OFF</kbd> with
<kbd>.NO_SHIM&nbsp;OFF</kbd> or <kbd>.NO_FLEX&nbsp;OFF</kbd>.
</p>

</div>

<h3 id="float-quote" class="docs">Keeping QUOTEs and BLOCKQUOTEs together as a block</h3>

<p>
The text of quotes and blockquotes is output immediately, and may therefore
start on one page and finish on the next.  If you wish to keep the
text together as a block, deferred to the following page if the
block doesn&#8217;t all fit on one page, wrap
(BLOCK)QUOTE&nbsp;/&nbsp;(BLOCK)QUOTE&nbsp;OFF
inside a
<a href="images.html#floats-intro">float</a>.  If you further wish to
force a page break before the floated quote or blockquote (leaving
whitespace at the bottom of the page, pass
<a href="images.html#float">FLOAT</a>
the <kbd>FORCE</kbd> argument.
<span class="pre-in-pp">
  .FLOAT FORCE
  .QUOTE
  Fly me to the moon
  And let me play among the stars
  Let me see what life is like
  On Jupiter and Mars
  .QUOTE END
  .FLOAT OFF
</span>
</p>

<h3 id="label-caption" class="docs">Labelling/captioning quotes and blockquotes</h3>

<p>
Quotes and blockquotes may be labelled and/or captioned identically to
<a href="images.html#floats-intro">floats</a>
with the macros
<a href="images.html#label">LABEL</a>
and
<a href="images.html#caption">CAPTION</a>.
</p>

<div class="macro-id-overline">
<h3 id="quote" class="macro-id">QUOTE</h3>
</div>

<div class="box-macro-args">
Macro: <b>QUOTE</b> <kbd class="macro-args">[ ADJUST +|-&lt;space&gt; ] | &lt;anything&gt;</kbd>
</div>
<p class="requires">
&bull;&nbsp;The argument to <kbd style="font-style: normal">ADJUST</kbd> requires a
<a href="definitions.html#unitofmeasure">unit of measure</a>
</p>

<p>
QUOTE is a toggle macro.  To begin a section of quoted text, invoke
it with no argument, then type in your quote.  When you&#8217;re
finished, invoke <kbd>.QUOTE</kbd> with any argument (e.g., <kbd>OFF,
END, X, Q</kbd>...) to turn it off.  Example:
<br/>
<span class="pre-in-pp">
  .QUOTE
  Nymphomaniacal Jill
  Used a dynamite stick for a thrill
  They found her vagina
  In North Carolina
  And bits of her tits in Brazil.
  .QUOTE END
</span>
Mom does her best to equalize whitespace around quotes and make
sure the line following it falls on a valid baseline.  On occasion,
you may need to tweak the quote placement slightly, which is done
by passing <kbd>ADJUST</kbd> to QUOTE with a plus or minus value.
The quote will be lowered (<kbd>+</kbd>) or raised (<kbd>-</kbd>)
<i>within the space allotted for it</i> by the given amount.  For
example, to lower a quote slightly within the space allotted for it,
you&#8217;d do
<br/>
<span class="pre-in-pp">
  .QUOTE ADJUST +3p
  There was a soprano named Golda
  Whose lovers grew colda and colda
  For during love-making
  She'd sing the earth-shaking
  Love theme from Tristan und Isolde.
  .QUOTE off
</span>
</p>

<h3 id="quote-control" class="docs defaults">QUOTE control macros and defaults</h3>

<ol style="margin-top: .5em; padding-bottom: .5em;">
  <li><a href="#quote-general">Family/font/size/leading/colour/indent</a></li>
  <li><a href="#always-fullspace-quotes">Spacing above and below quotes (typeset only)</a></li>
  <li><a href="#underline-quotes">Underlining quotes (typewrite only)</a></li>
</ol>
</div>

<h4 id="quote-general" class="docs" style="margin-top: -1.5em; margin-bottom: .5em;">1. Family/font/size/colour/indent</h4>

<div class="defaults-container" style="padding-bottom: 8px;">
<p class="defaults" style="padding-top: 6px;">
See
<a href="#control-macro-args">Arguments to the control macros</a>.
<br/>
The following QUOTE control macros may also be
<a href="#grouping">grouped</a>
using QUOTE_STYLE.  If you do so, <kbd>QUOTE_LEFT</kbd>, <kbd>QUOTE_CENTER</kbd>,
and <kbd>QUOTE_RIGHT</kbd> must be entered as:
<br/>
<kbd>&nbsp;&nbsp;&nbsp;QUAD LEFT</kbd><br/>
<kbd>&nbsp;&nbsp;&nbsp;QUAD CENTER</kbd><br/>
<kbd>&nbsp;&nbsp;&nbsp;QUAD RIGHT</kbd>
</p>

<span class="pre defaults">
.QUOTE_FAMILY   default = prevailing document family; default is Times Roman
.QUOTE_FONT     default = italic; underlined in TYPEWRITE
.QUOTE_SIZE     default = +0 (ie same size as paragraph text)
<a id="quote-autolead">.QUOTE_AUTOLEAD default = none; leading of quotes is the same as paragraphs </a>
.QUOTE_COLOR    default = black
.QUOTE_INDENT  (see below, "Quote indent")
.QUOTE_LEFT    -+  Quad direction of quote.
.QUOTE_CENTER   |  LEFT observes QUOTE_INDENT;
.QUOTE_RIGHT   -+  CENTER and RIGHT do not
</span>
</div>

<h4 id="quote-indent" class="docs" style="margin-top: -1.5em;">Quote indent</h4>

<p>
<kbd>QUOTE_INDENT</kbd> takes one of two kinds of argument: an integer
representing the amount by which to multiply the argument passed to
<a href="#para-indent"><kbd>.PARA_INDENT</kbd></a>
(by default, 2
<a href="definitions.html#em">ems</a>
for TYPESET, 3
<a href="definitions.html#picaspoints">picas</a>
for TYPEWRITE) to arrive at the quote indent, or a distance with a
<a href="definitions.html#unitofmesaure">unit of measure</a>
appended.  Both result in quotes being indented equally from the
left and right margins.
</p>

<p>
The default value for QUOTE_INDENT is 3 (for
<a href="docprocessing.html#printstyle">PRINTSTYLE <kbd>TYPESET</kbd></a>)
and 1 (for
<a href="docprocessing.html#printstyle">PRINTSTYLE <kbd>TYPEWRITE</kbd></a>).
</p>

<div class="box-tip">
<p class="tip">
<span class="note">Note:</span>
If your PARA_INDENT is 0 (ie no indenting of the first line of
paragraphs), you <i>must</i> set a QUOTE_INDENT yourself, with a
unit of measure appended to the argument. Mom has no default for
QUOTE_INDENT if paragraph first lines are not being indented.
</p>
</div>

<h4 id="always-fullspace-quotes" class="docs" style="margin-top: -.25em;">2. Spacing above and below quotes (typeset only)</h4>

<p>
If you&#8217;d like mom always to put a full linespace above and
below quotes, invoke
<br/>
<span class="pre-in-pp">
  .ALWAYS_FULLSPACE_QUOTES
</span>
with no argument.  If you wish to restore mom&#8217;s
default behaviour regarding the spacing of quotes (see
<a href="#quote-spacing">Quote spacing</a>),
invoke the macro with any argument (<kbd>OFF, QUIT, END, X</kbd>...)
</p>

<div class="box-tip">
<p class="tip">
<span class="note">Note:</span>
This macro also sets mom&#8217;s spacing policy for
<a href="#blockquote-intro">blockquotes</a>.
</p>
</div>

<h4 id="underline-quotes" class="docs" style="margin-top: -.25em;">3. Underlining quotes (typewrite only)</h4>

<p>
By default in
<a href="docprocessing.html#printstyle">PRINTSTYLE TYPEWRITE</a>,
mom underlines quotes.  If you&#8217;d rather she didn&#8217;t,
invoke <kbd>.UNDERLINE_QUOTES</kbd> with any argument (<b>OFF,
QUIT, END, X</b>...) to disable the feature.  Invoke it without
an argument to restore mom&#8217;s default underlining of
quotes.
</p>

<p>
If you not only wish that mom not underline quotes, but also that
she set them in italic, you must follow each instance of QUOTE with
the typesetting macro
<a href="typesetting.html#font">FT I</a>.
Furthermore, since mom underlines all instances of italics by
default in <b>PRINTSTYLE TYPEWRITE</b>, you must also make sure that
ITALIC_MEANS_ITALIC is enabled (see
<a href="docprocessing.html#typewrite-control">PRINTSTYLE TYPEWRITE control macros</a>).
</p>

<h2 id="blockquote-intro" class="macro-group">Blockquotes (cited material)</h2>

<ul style="margin-left: -.5em;">
  <li><a href="#blockquote-description">Introduction</a>
  <li><a href="#blockquote">Tag: BLOCKQUOTE</a></li>
  <li><a href="#blockquote-control">BLOCKQUOTE control macros</a></li>
</ul>

<p id="blockquote-description">
<a href="definitions.html#blockquote">Blockquotes</a>
are used to cite passages from another author&#8217;s work.  So that
they stand out well from
<a href="definitions.html#running">running text</a>,
mom indents them from both the left and right margins and sets them
in a different point size
(<a href="docprocessing.html#printstyle">PRINTSTYLE TYPESET</a>
only).
<a href="definitions.html#outputline">Output lines</a>
are
<a href="definitions.html#filled">filled</a>,
and, by default,
<a href="definitions.html#quad">quadded</a>
left.
</p>

<p>
Besides indenting blockquotes, mom further sets them off from
running text with a small amount of vertical whitespace top and
bottom.  (See
<a href="#quote-spacing">Quote spacing</a>
for a complete explanation of how this is managed, and how
to control it.)
</p>

<p>
Additional information concerning blockquotes, floats, and labelling
blockquotes can be found in the sections
<a href="#float-quote">Keeping quotes and blockquotes together as a block</a>,
and
<a href="#label-caption">Labelling/captioning quotes and blockquotes</a>.
</p>

<div class="macro-id-overline">
<h3 id="blockquote" class="macro-id">BLOCKQUOTE</h3>
</div>

<div class="box-macro-args">
Macro: <b>BLOCKQUOTE</b>  <kbd class="macro-args">[ ADJUST +|-&lt;space&gt; ] | &lt;anything&gt;</kbd>
</div>

<p class="alias" style="margin-bottom: 0;">
<i>Aliases: </i> <b>CITE, CITATION</b>
</p>

<p class="requires">
&bull;&nbsp;The argument to <kbd style="font-style: normal">ADJUST</kbd> requires a
<a href="definitions.html#unitofmeasure">unit of measure</a>
</p>

<p>
BLOCKQUOTE is a toggle macro.  To begin a cited passage, invoke
the tag with no argument, then type in your blockquote.  When
you&#8217;re finished, invoke <kbd>.BLOCKQUOTE</kbd> with any
argument (e.g., <kbd>OFF, END, X, Q</kbd>...) to turn it off.
Example:
<br/>
<span class="pre-in-pp">
  .BLOCKQUOTE
  Redefining the role of the United States from enablers to keep
  the peace to enablers to keep the peace from peacekeepers is
  going to be an assignment.
  .RIGHT
  \[em]George W. Bush
  .BLOCKQUOTE END
</span>
If the cited passage runs to more than one paragraph, you must
introduce each paragraph&mdash;including the first&mdash;with
<kbd><a href="#pp">.PP</a></kbd>.
</p>

<p>
Mom does her best to equalize whitespace around blockquotes and make
sure the line following it falls on a valid baseline.  On occasion,
you may need to tweak the blockquote placement slightly, which is
done by passing <kbd>ADJUST</kbd> to BLOCKQUOTE with a plus or minus
value.  The blockquote will be lowered (<kbd>+</kbd>) or raised
(<kbd>-</kbd>) <i>within the space allotted for it</i> by the given
amount.  For example, to raise a blockquote slightly within the
space allotted for it, you&#8217;d do
<br/>
<span class="pre-in-pp">
  .BLOCKQUOTE ADJUST -3p
  True! - nervous - very, very dreadfully nervous I had been and
  am; but why will you say that I am mad?  The disease had sharpened
  my senses - not destroyed - not dulled them.
  .RIGHT
  \[em]Edgar Allen Poe, The Tell-Tale Heart
  .QUOTE off
</span>
</p>

<div class="box-tip">
<p class="tip">
<span class="note">Note:</span>
The aliases CITE and CITATION may be used in place of the BLOCKQUOTE
tag, as well as in any of the control macros that begin or end with
<kbd>BLOCKQUOTE_</kbd>.
</p>
</div>

<div class="defaults-container" style="background-color: #ded4bd; border: none;">
<h3 id="blockquote-control" class="docs defaults">BLOCKQUOTE control macros and defaults</h3>

<ol style="margin-top: .5em; padding-bottom: .5em;">
  <li><a href="#blockquote-general">Family/font/size/leading/colour/quad/indent</a></li>
  <li><a href="#bq-always-fullspace-quotes">Spacing above and below (typeset only)</a></li>
</ol>
</div>

<h4 id="blockquote-general" class="docs" style="margin-top: -1.5em; margin-bottom: .5em;">1. Family/font/size/colour/quad/indent</h4>

<div class="defaults-container" style="padding-bottom: 8px;">
<p class="defaults" style="padding-top: 6px;">
See
<a href="#control-macro-args">Arguments to the control macros</a>.
<br/>
The following BLOCKQUOTE control macros may also be
<a href="#grouping">grouped</a>
using BLOCKQUOTE_STYLE.
</p>
<span class="pre defaults">
.BLOCKQUOTE_FAMILY   default = prevailing document family; default is Times Roman
.BLOCKQUOTE_FONT     default = roman
.BLOCKQUOTE_SIZE     default = -1 (point)
<a id="blockquote-autolead">.BLOCKQUOTE_AUTOLEAD default = none; leading of blockquotes is the same as paragraphs</a>
.BLOCKQUOTE_COLOR    default = black
.BLOCKQUOTE_QUAD     default = left
.BLOCKQUOTE_INDENT  (see below)
</span>
</div>

<h4 id="blockquote-indent" class="docs" style="margin-top: -1.5em;">Blockquote indent</h4>

<p>
<kbd>BLOCKQUOTE_INDENT</kbd> takes one of two kinds of argument: an
integer representing the amount by which to multiply the argument
passed to
<a href="#para-indent"><kbd>.PARA_INDENT</kbd></a>
(by default, 2
<a href="definitions.html#em">ems</a>
for TYPESET, 3
<a href="definitions.html#picaspoints">picas</a>
for TYPEWRITE) to arrive at the blockquote indent, or a distance with a
<a href="definitions.html#unitofmesaure">unit of measure</a>
appended.  Both result in blockquotes being indented equally from
the left and right margins.
</p>

<p>
The default value for BLOCKQUOTE_INDENT is 3 (for
<a href="docprocessing.html#printstyle">PRINTSTYLE <kbd>TYPESET</kbd></a>)
and 1 (for
<a href="docprocessing.html#printstyle">PRINTSTYLE <kbd>TYPEWRITE</kbd></a>).
</p>

<div class="box-tip">
<p class="tip">
<span class="note">Note:</span>
If your PARA_INDENT is 0 (ie no indenting of the first line of
paragraphs), you <i>must</i> set a BLOCKQUOTE_INDENT yourself, with
a unit of measure appended to the argument.  Mom has no default for
BLOCKQUOTE_INDENT if paragraph first lines are not being indented.
</p>
</div>

<h4 id="bq-always-fullspace-quotes" class="docs">2. Spacing above and below blockquotes (typeset only)</h4>

<p>
If you&#8217;d like mom always to put a full linespace above and
below blockquotes, invoke
<br/>
<span class="pre-in-pp">
  .ALWAYS_FULLSPACE_QUOTES
</span>
with no argument.  If you wish to restore mom&#8217;s default
behaviour regarding the spacing of blockquotes (see
<a href="#quote-spacing">Quote spacing</a>),
invoke the macro with any argument (<b>OFF, QUIT, END,
X</b>...).
</p>

<div class="box-tip">
<p class="tip">
<span class="note">Note:</span>
This macro also sets mom&#8217;s spacing policy for
<a href="#quote-intro">quotes</a>.
</p>
</div>

<h2 id="code-intro" class="macro-group">Inserting code into a document</h2>

<ul style="margin-left: -.5em;">
  <li><a href="#code">Tag: CODE</a></li>
  <li><a href="#code-control">CODE control macros and defaults</a></li>
</ul>

<p>
CODE is a convenience macro that facilitates entering code blocks
into documents.  Its use is not restricted to documents created
using mom&#8217;s document processing macros; it can be used for
&#8220;manually&#8221; typeset documents as well.
</p>

<div class="box-macro-args">
Macro: <b>CODE</b> <kbd class="macro-args">[BR | BREAK | SPREAD] toggle</kbd>
</div>

<p class="requires" style="font-style: normal">
Inline escape: <b><kbd>\*[CODE]</kbd></b>
</p>

<p>
When you invoke the macro <kbd>.CODE</kbd> or insert <kbd>\*[CODE]</kbd> into
running text, mom switches to a
<a href="definitions.html#fixedwidthfont">fixed-width font</a>
(Courier, by default) and turns
<a href="goodies.html#smartquotes">SMARTQUOTES</a>
off.
</p>

<p>
If your code includes the backslash character, which is
groff&#8217;s escape character, you will have to change the
escape character temporarily to something else with the macro
<a href="goodies.html#esc-char">ESC_CHAR</a>.
Mom has no way of knowing what special characters you&#8217;re going
to use in code snippets, therefore she cannot automatically replace
the escape character with something else.
</p>

<p>
The correct order for changing the escape character inside
<kbd>CODE</kbd> is
<span class="pre-in-pp">
  .CODE
  .ESC_CHAR character
  &lt;code&gt;
  .ESC_CHAR .
  .CODE OFF
</span>
Be aware that changing the escape character prevents subsequent
macros, which require that the backslash be the escape character,
from functioning correctly.  Therefore, do not introduce any macros
into your CODE block without first restoring the escape character to
its default.
</p>

<p>
Alternatively, you can enter the backslash character as
<kbd>\e</kbd> or <kbd>\\</kbd> (two backslashes), which tells groff
to print a literal backslash.
</p>

<div class="box-tip">
<p class="tip-top">
<span class="tip">Note:</span>
<kbd>.CODE</kbd> does not cause a line break when
you&#8217;re in a
<a href="definitions.html#filled">fill mode</a>
(ie
<a href="typesetting.html#justify">JUSTIFY</a>
or
<a href="typesetting.html#quad">QUAD</a>
<kbd>LEFT, CENTER,</kbd> or <kbd>RIGHT</kbd>).
If you want CODE to deposit a break, invoke <kbd>.CODE</kbd> with
the argument <kbd>BR</kbd> (or <kbd>BREAK</kbd>).  If, in addition
to having mom break the line before <kbd>.CODE</kbd>, you want her
to
<a href="definitions.html#force">force justify</a>
it as well, invoke <kbd>.CODE</kbd> with the argument,
<kbd>SPREAD</kbd>.  If, in addition to breaking the line before CODE
you want a break afterwards, you must supply it manually with
<a href="typesetting.html#br">BR</a>
unless what follows immediately is a macro that automatically causes
a break (e.g.,
<a href="#pp">PP</a>).
</p>

<p class="tip-bottom">
In all likelihood, if you want the situation described above (ie a
break before and after CODE), what you probably want is to use
<a href="quote">QUOTE</a>
in conjunction with CODE, like this:
<br/>
<span class="pre-in-pp">
  .QUOTE
  .CODE
  $ echo "Hello, world" | sed -e 's/Hello,/Goodbye, cruel/'
  .QUOTE OFF
</span>
QUOTE takes care of breaking both the text and the code, as well as
indenting the code and offsetting it from
<a href="definitions.html#running">running text</a>
with vertical whitespace.  Notice that <kbd>.CODE</kbd>, above, has
no corresponding <kbd>.CODE OFF</kbd>.  <kbd>.CODE</kbd> inside a QUOTE
does not require a terminating <kbd>.CODE&nbsp;OFF</kbd>, which risks
introducing unwanted vertical whitespace.
</p>
</div>

<p>
Passing any argument other than <kbd>BR</kbd>, <kbd>BREAK</kbd> or
<kbd>SPREAD</kbd> to CODE (e.g., <kbd>OFF, QUIT, END, X,</kbd> etc.)
turns CODE off and returns the family, font, and smartquotes back to
their former state.
</p>

<h4 class="docs" style="font-size: 102%">Using <kbd>\*[CODE]</kbd> inline</h4>

<p>
<kbd>\*[CODE]</kbd> invokes <kbd>.CODE</kbd>, allowing you to
bracket code snippets inline.  It does not accept the <kbd>BR</kbd>,
<kbd>BREAK</kbd>, or <kbd>SPREAD</kbd> arguments.  It is most useful
for short snippets, as in the following example.
<br/>
<span class="pre-in-pp">
  \*[CODE]apropos\*[CODE OFF] and \*[CODE]man&nbsp;-k\*[CODE] are identical.
</span>
</p>

<p>
<kbd>\*[CODE]</kbd> does not permit changing the escape character,
so <kbd>\e</kbd> or a doubled backslash must be used.  Furthermore,
if your code starts with a period, you must enter it as
&#8220;<kbd>\&.</kbd>&#8221;.
<br/>
<span class="pre-in-pp">
  Registers are created with the \*[CODE]\&.nr\*[CODE OFF] request.
</span>
</p>

<h4 class="docs" style="font-size: 102%; margin-top: -1em">CODE and punctuation</h4>

<p>
<kbd>.CODE&nbsp;OFF</kbd> automatically inserts a word space into
running text.  If your CODE block is to be followed by punctuation
with the parameters of
<a href="definitions.html#running">running text</a>,
you must terminate the block with &#8220;<kbd>\c</kbd>&#8221; and
enter the punctuation at the beginning of the next input line.  If
the punctuation mark is a period or an apostrophe, you must precede
it with
&#8220;<kbd>\&amp;</kbd>&#8221;.
<br/>
<span class="pre-in-pp">
  ...for example,
  .CODE
   echo "Hello, world" | sed -e 's/Hello,/Goodbye, cruel/'\c
  .CODE OFF
  \&.  As this demonstrates...
</span>
Use of <kbd>\*[CODE]</kbd> inline does not require the
<kbd>\c</kbd>, however periods and apostrophes after
<kbd>\*[CODE&nbsp;OFF]</kbd> still need to be introduced with
<kbd>\&</kbd>, as in this example:
<br/>
<span class="pre-in-pp">
  ...append the unit of measure \*[CODE]p\*[CODE&nbsp;OFF]\&. New sentence...
</span>
</p>

<div class="defaults-container" style="background-color: #ded4bd; border: none;">
<h3 id="code-control" class="docs defaults">CODE control macros and defaults</h3>

<ol style="margin-top: .5em; padding-bottom: .5em;">
  <li><a href="#code-general">Family/Font/Colour</a></li>
  <li><a href="#code-size">Size</a></li>
</ol>
</div>

<h4 id="code-general" class="docs" style="margin-top: -1.5em; margin-bottom: .5em;">1. Family/font/colour</h4>

Note: Unlike other control macros, CODE_FONT sets the code font for both
PRINTSTYLE TYPESET and PRINTSTYLE TYPEWRITE.
</span>
</div>

<p>
CODE_SIZE works a little differently from the other _SIZE macros
(see <a href="#control-macro-args">Arguments to the control
macros</a>).  The argument you pass it is a percentage of the
prevailing document point size.  It does not require a pre-pended
plus (<kbd>+</kbd>) or minus (<kbd>-</kbd>) sign, nor an appended
percent sign (<kbd>%</kbd>).  Thus, is you want the point size of your CODE font to be
90% of the prevailing document point size, you enter:
<br/>
<span class="pre-in-pp">
  .CODE_SIZE 90
</span>
Fixed-width fonts have notoriously whimsical
<a href="definitions.html#xheight">x-heights</a>,
meaning that they frequently look bigger (or, in some cases,
smaller) than the type surrounding them, even if they're technically
the same point size.  CODE_SIZE lets you choose a percentage of the
prevailing point size for your fixed-width CODE font so it doesn't look
gangly or miniscule in relation to the type around it.  All
invocations of <kbd>.CODE</kbd> or <kbd>\*[CODE]</kbd> will use this
size, so that if you decide to change the prevailing point size of your
document, the CODE font will be scaled proportionally.
</p>

<h2 id="list-intro" class="macro-group">Nested lists</h2>

<ul style="margin-left: -.5em;">
  <li><a href="#list">Tag: LIST</a></li>
  <li><a href="#item">Tag: ITEM</a></li>
  <li><a href="#list-control">LIST control macros and defaults</a></li>
</ul>

<p>
Lists are points or items of interest or importance that are
separated from
<a href="definitions.html#running">running text</a>
by enumerators.  Some typical enumerators are
<a href="definitions.html#em">en-dashes</a>,
<a href="definitions.html#bullet">bullets</a>,
digits and letters.
</p>

<p>
Setting lists with mom is easy.  First, you initialize a list with
the LIST macro.  Then, for every item in the list, you invoke
the macro <kbd>.ITEM</kbd> followed by the text of the item.
When a list is finished, you exit the list with
<kbd>.LIST&nbsp;OFF</kbd> (or <kbd>QUIT, END, BACK,</kbd> etc.)
</p>

<p>
By default mom starts each list with the enumerator flush with the
left margin of running text that comes before it, like this:
<br/>
<span class="pre-in-pp">
  My daily schedule needs organizing.  I can&#8217;t
  seem to get everything done I want.
  o an hour&#8217;s worth of exercise
  o time to prepare at least one healthy
    meal per day
  o reading time
  o work on mom
  o writing
    - changes from publisher
    - current novel
  o a couple of hours at the piano
</span>
In other words, mom does not, by default, indent entire lists.
Indenting a list is controlled by the macro
<a href="#shift-list">SHIFT_LIST</a>.
(This is a design decision; there are too many instances where a
default indent is not desirable.)  Equally, mom does not add any
extra space above or below lists.
</p>

<p>
Lists can be nested (as in the example above).  In other words,
you can set lists within lists, each with an enumerator (and
possibly, indent) of your choosing.  In nested lists, each
invocation of <kbd>.LIST&nbsp;OFF</kbd> (you may prefer to use
<kbd>.LIST&nbsp;BACK</kbd>) takes you back to the previous depth
(or level) of list, with that list&#8217;s enumerator and indent
intact.  The final <kbd>.LIST&nbsp;OFF</kbd> exits lists completely
and returns you to the left margin of running text.
</p>

<p>
If
<kbd><a href="typesetting.html#quad">QUAD CENTER</a></kbd>
is in effect when LIST is invoked, the list is set quad left but
centred on the page as a block, based on the longest line of list
text.  Equally, if <kbd>QUAD RIGHT</kbd> in in effect, the list is
set flush left but quadded right as a block.  If you want a centred
or right-quadded list in an otherwise left-quadded or justified
document, simply invoke <kbd>.QUAD&nbsp;&lt;direction&gt;</kbd> 
before the list and reset the quad afterwards.  Do not use
<kbd><a href="typesetting.html#lrc">CENTER</a></kbd>
or
<kbd><a href="typesetting.html#lrc">RIGHT</a></kbd>.
</p>

<div class="box-tip">
<p class="tip">
<span class="note">Note:</span>
Mom centres lists over the entire line length, disregarding
<a href="typesetting.html#ib">IB</a>
if it is in effect.  If there are lines in the list that exceed
the the margins of IB, they must be broken manually with
<kbd>.BR</kbd> if you wish to keep them within the indented margins.
</p>
</div>

<p>
Finally, lists can be used in documents created with either the
<a href="docprocessing.html#top">document processing macros</a>
or just the
<a href="typesetting.html#top">typesetting macros</a>.
</p>

<p>
Invoked by itself (ie with no argument), LIST
initializes a list with bullets as the default enumerator.
Afterward,s each block of input text preceded by
<kbd><a href="#item">.ITEM</a></kbd>,
on a line by itself, is treated as a list item.
</p>

<div class="box-tip">
<p class="tip">
<span class="note">Note:</span>
Every time you invoke <kbd>.LIST</kbd> to start a list (as opposed to
<a href="#list-exit">exiting one</a>),
you must supply an enumerator (and optionally, a separator) for the
list, unless you want mom&#8217;s default enumerator, which is a
bullet.  Within nested lists, mom stores the enumerator, separator
and indent for any list you return <i>backwards</i> to (ie with
<kbd>.LIST OFF</kbd>), but does not store any information for lists
you move <i>forward</i> to.
</p>
</div>

<p>
There are a lot of arguments (be sure to side-scroll through them
all, above), so I&#8217;ll discuss them one at a time here.
</p>
<h3 class="docs">The first argument &ndash; enumerator style</h3>

<p>
The optional arguments <kbd>BULLET</kbd>, <kbd>DASH</kbd>,
<kbd>DIGIT</kbd> (for Arabic numerals), <kbd>ALPHA</kbd> (for
uppercase letters), <kbd>alpha</kbd> (for lowercase letters),
<kbd>ROMAN&lt;n&gt;</kbd> (for uppercase roman numerals),
<kbd>roman&lt;n&gt;</kbd> (for lowercase roman numerals) tell
<kbd>mom</kbd> what kind of enumerator to use for a given list.
</p>

<p>
The arguments, <kbd>ROMAN&lt;n&gt;</kbd> and
<kbd>roman&lt;n&gt;</kbd>, are special.  You must append to them
a digit (arabic, e.g., "1" or "9" or "17") saying how many items a
particular roman-numeralled LIST is going to have. Mom requires this
information in order to align roman numerals sensibly, and will
abort&mdash;with a message &mdash; if you don&#8217;t provide it.
(For setting roman numeral and digit lists with the enumerators
aligned flush right&mdash;the default is flush left&mdash;see
<a href="#pad-list-digits">PAD_LIST_DIGITS</a>.)
</p>

<p>
A roman-numeralled list containing, say, five items, would be set
up like this:
<br/>
<span class="pre-in-pp">
  .LIST roman5        producing        i)   Item 1.
  .ITEM                                ii)  Item 2.
  Item 1.                              iii) Item 3.
  .ITEM                                iv)  Item 4.
  Item 2.                              v)   Item 5.
  .ITEM
  Item 3
  .ITEM
  Item 4
  .ITEM
  Item 5
</span>
</p>

<p>
The argument <kbd>VARIABLE&nbsp;&lt;character&gt;</kbd> lets
you choose different enumerators for the items in a list.
<kbd>&lt;character&gt;</kbd> is the widest enumerator to
be used.  Thus, if you have a list enumerated by both bullets
and em-dashes, you&#8217;d set it up with
<br/>
<span class="pre-in-pp">
  .LIST VARIABLE \[em]
</span>
and select the enumerator you want with
<br/>
<span class="pre-in-pp">
  .ITEM \[em]
</span>
or
<br/>
<span class="pre-in-pp">
  .ITEM \[bu]
</span>
If your enumerator contains spaces, you must enclose the
<kbd>&lt;character&gt;</kbd> argument in both LIST and ITEM in
double-quotes,
e.g.
<br/>
<span class="pre-in-pp">
  .LIST VARIABLE "\*[UP 1p]\[bu]\*[DOWN 1p]"
  .ITEM "\*[UP 1p]\[bu]\*[DOWN 1p]"
</span>
</p>

<p>
The argument <kbd>USER</kbd> lets you make up your own enumerator,
and must be followed by a second argument: what you&#8217;d like the
enumerator to look like.  For example, if you want a list enumerated
with <kbd>=&gt;</kbd>,
<br/>
<span class="pre-in-pp">
  .LIST USER =&gt;
  .ITEM
  A list item
</span>

will produce
<br/>
<span class="pre-in-pp">
  =&gt; A list item
</span>
Some useful special groff characters you might want to pass to
<kbd>USER</kbd> are:
<span class="pre-in-pp">
  \[sq] - square box
  \[rh] - pointing hand
  \[-&gt;] - right arrow
  \[rA] - right double arrow
  \[OK] - checkmark
</span>
The size and vertical positioning of special characters may be
adjusted with
<a href="definitions.html#inlines">inline escapes</a>
in the argument passed to USER.  For example, to raise the position
of <kbd>\[sq]</kbd> slightly, you might do
<span class="pre-in-pp">
  .LIST USER "\*[UP .25p]\[sq]\*[DOWN .25p]"
    or
  .LIST USER \v'-.25p'\[sq]\v'.25p'
</span>
</p>

<p>
The argument <kbd>PLAIN</kbd> initializes a list with no enumerator.
</p>

<div class="box-tip">
<p class="tip">
<span class="note">Note:</span>
If the argument to <kbd>USER</kbd> contains spaces, you must enclose
the argument in double quotes.
</p>
</div>

<h3 class="docs">The second argument &ndash; separator style</h3>

<p>
If you choose <kbd>DIGIT</kbd>, <kbd>ALPHA</kbd>, <kbd>alpha</kbd>,
<kbd>ROMAN&lt;n&gt;</kbd>, or <kbd>roman&lt;n&gt;</kbd>, you may
enter the optional argument, <kbd>separator</kbd>, to say what kind
of separator you want after the enumerator.  The separator can be
anything you like.  The default for <kbd>DIGIT</kbd> is a period
(dot), like this:
<br/>
<span class="pre-in-pp">
  1. A list item
</span>
The default separator for <kbd>ALPHA</kbd>, <kbd>alpha</kbd>,
<kbd>ROMAN&lt;n&gt;</kbd> and <kbd>roman&lt;n&gt;</kbd> is a right
parenthesis, like this:
<br/>
<span class="pre-in-pp">
  a) An alpha-ed list item
  b) A second alpha-ed list item
</span>
If you&#8217;d prefer, say, digits with right-parenthesis separators
instead of the default period, you&#8217;d do
<br/>
<span class="pre-in-pp">
  .LIST DIGIT )
  .ITEM
  A numbered list item
</span>
which would produce
<br/>
<span class="pre-in-pp">
  1) A numbered list item
</span>
</p>

<div class="box-tip">
<p class="tip">
<span class="note">Note:</span>
<kbd>BULLET</kbd>, <kbd>DASH</kbd> and <kbd>USER</kbd> do not take a
separator.
</p>
</div>

<h3 class="docs">The third argument &ndash; prefix style</h3>

<p>
Additionally, you may give a prefix (ie a character
that comes <i>before</i> the enumerator) when your
enumerator style for a particular list is <kbd>DIGIT</kbd>,
<kbd>ALPHA</kbd>, <kbd>alpha</kbd>, <kbd>ROMAN&lt;n&gt;</kbd> or
<kbd>roman&lt;n&gt;</kbd>.  In the arguments to LIST, the prefix
comes <i>after</i> the separator, which is counter-intuitive,
so please be careful.
</p>

<p>
A prefix can be anything you like.  Most likely, you&#8217;ll want
some kind of open-bracket, such as a left parenthesis.  If, for
example, you want a <kbd>DIGIT</kbd> list with the numbers enclosed
in parentheses, you&#8217;d enter
<br/>
<span class="pre-in-pp">
  .LIST DIGIT ) (
  .ITEM
  The first item on the list.
  .ITEM
  The second item on the list.
</span>
which would produce 
<br/>
<span class="pre-in-pp">
  (1) The first item on the list.
  (2) The second item on the list.
</span>
</p>

<div class="box-tip">
<p class="tip">
<span class="note">Note:</span>
<kbd>BULLET</kbd>, <kbd>DASH</kbd> and
<kbd>USER</kbd> do not take a prefix.
</p>
</div>

<h3 class="docs">Exiting lists &ndash; LIST OFF/BACK or QUIT_LISTS</h3>

<p>
Any single argument to <kbd>LIST</kbd> other than
<kbd>BULLET</kbd>, <kbd>DASH</kbd>, <kbd>DIGIT</kbd>,
<kbd>ALPHA</kbd>, <kbd>alpha</kbd>, <kbd>ROMAN&lt;n&gt;</kbd>,
<kbd>roman&lt;n&gt;</kbd> or <kbd>USER</kbd> (e.g.,
<kbd>LIST&nbsp;OFF</kbd> or <kbd>LIST&nbsp;BACK</kbd>) takes you out
of the current list.
</p>

<p>
If you are at the first list-level (or list-depth), mom returns you
to the left margin of running text.  Any indents that were in effect
prior to setting the list are fully restored.
</p>

<p>
If you are in a nested list, mom moves you back one list-level
(ie does not take you out of the list structure) and restores the
enumerator, separator and indent appropriate to that level.
</p>

<p>
Each invocation of <kbd>.LIST</kbd> should thus be be matched by
a corresponding <kbd>.LIST&nbsp;OFF</kbd> in order to fully exit
lists.  For example,
<br/>
<span class="pre-in-pp">
  Lorem ipsum dolor sit amet, consetetur sadipscing elitr,
  sed diam nonumy eirmod tempor invidunt ut labore.
  o List item in level 1
  o List item in level 1
    - List item in level 2
    - List item in level 2
  Lorem ipsum dolor sit amet, consetetur sadipscing elitr,
  sed diam nonumy eirmod tempor invidunt ut labore.
</span>
is created like this:
<br/>
<span class="pre-in-pp">
  Lorem ipsum dolor sit amet, consetetur sadipscing elitr,
  sed diam nonumy eirmod tempor invidunt ut labore.
  .LIST BULLET
  .ITEM
  List item in level 1
  .ITEM
  List item in level 1
  .LIST DASH
  .ITEM
  List item in level 2
  .ITEM
  List item in level 2
  .LIST OFF    \" Turn level 2 list off
  .LIST OFF    \" Turn level 1 list off
  Lorem ipsum dolor sit amet, consetetur sadipscing elitr,
  sed diam nonumy eirmod tempor invidunt ut labore.
</span>
Alternatively, you may use the single-purpose macro
<kbd>.QUIT_LISTS</kbd>, to get yourself out of a list structure.  In
the example above, the two <kbd>.LIST&nbsp;OFF</kbd> lines could be
replaced with a single <kbd>.QUIT_LISTS</kbd>.
</p>

<div class="box-macro-args">
Macro: <b>ITEM</b> <kbd class="macro-args">[&lt;enumerator&gt;] [&lt;space&gt;]</kbd>
</div>
<p class="requires">
&bull;&nbsp;The argument to <kbd style="font-style: normal">&lt;space&gt;</kbd> requires a
<a href="definitions.html#unitofmeasure">unit of measure</a>
</p>

<p>
After you&#8217;ve initialized a list with
<a href="#list">LIST</a>,
precede each item you want in the list with <kbd>.ITEM</kbd>.  Mom
takes care of everything else with respect to setting the item
appropriate to the list you&#8217;re in.
</p>

<p>
If you&#8217;ve chosen the <kbd>VARIABLE</kbd> argument when
invoking LIST, ITEM must be followed by an enumerator character.
</p>

<p>
If you give ITEM a space argument, either by itself or after a
variable enumerator character, the item will be spaced by the amount
of the argument.
</p>

<p>
In document processing, it is valid to have list items that contain
multiple paragraphs.  Simply issue a
<kbd><a href="#pp">.PP</a></kbd>
request for each paragraph <i>following</i> the first item.
I.e., don&#8217;t do this:
<br/>
<span class="pre-in-pp">
  .ITEM
  .PP
  Some text...
  .PP
  A second paragraph of text
</span>
but rather
<br/>
<span class="pre-in-pp">
  .ITEM
  Some text...
  .PP
  A second paragraph of text
</span>
</p>

<div class="defaults-container" style="background-color: #ded4bd; border: none;">
<h3 id="list-control" class="docs defaults">LIST control macros and defaults</h3>

<p style="margin-top: 0; margin-left: .5em">
LIST control macros may not be
<a href="#grouping">grouped</a>.
</p>

<ol style="margin-top: -.5em; padding-left: 1.5em; padding-bottom: .5em;">
  <li><a href="#shift-list">Indenting lists (SHIFT_LIST)</a></li>
  <li><a href="#reset-list">Resetting an initialized list&#8217;s enumerator (RESET_LIST)</a></li>
  <li><a href="#pad-list-digits">Padding digit enumerators (PAD_LIST_DIGITS)</a></li>
</ol>
</div>

<h4 id="shift-list" class="docs" style="margin-top: -1.5em;">1. Indenting lists &ndash; SHIFT_LIST</h4>

<p>
If you want a list to be indented to the right of running text, or
indented to the right of a current list, use the macro SHIFT_LIST
immediately after
<a href="#list">LIST</a>.
SHIFT_LIST takes just one argument: the amount by which you want the
list shifted to the right.  The argument requires a
<a href="definitions.html#unitofmeasure">unit of measure</a>.
</p>

<p>
SHIFT_LIST applies only to the list you just initialized with LIST.
It does not carry over from one invocation of LIST to the next.
However, the indent remains in effect when you return to a list
level in a nested list.
</p>

<p>
For example, if you want a 2-level list, with each list indented to
the right by 18
<a href="definitions.html#picaspoints">points</a>,
<br/>
<span class="pre-in-pp">
  Lorem ipsum dolor sit amet, consetetur sadipscing elitr,
  sed diam nonumy eirmod tempor invidunt ut labore.
  .LIST           \" List 1
  .SHIFT_LIST 18p \" Indent 18 points right of running text
  .ITEM
  List 1 item
  .ITEM
  List 1 item
  .LIST DASH      \" List 2
  .SHIFT_LIST 18p \" Indent 18 points right of list 1
  .ITEM
  List 2 item
  .ITEM
  List 2 item
  .LIST OFF       \" Move back to list 1
  .ITEM
  List 1 item
  .ITEM
  List 1 item
  .LIST OFF       \" Exit lists
  Lorem ipsum dolor sit amet, consetetur sadipscing elitr,
  sed diam nonumy eirmod tempor invidunt ut labore.
</span>
produces (approximately)
<br/>
<span class="pre-in-pp">
  Lorem ipsum dolor sit amet, consetetur sadipscing elitr,
  sed diam nonumy eirmod tempor invidunt ut labore.
      o List 1 item
      o List 1 item
          - List 2 item
          - List 2 item
      o List 1 item
      o List 1 item
  Lorem ipsum dolor sit amet, consetetur sadipscing elitr,
  sed diam nonumy eirmod tempor invidunt ut labore.
</span>
</p>

<h4 id="reset-list" class="docs" style="margin-top: -.25em;">2. Resetting an initialized list&#8217;s enumerator &ndash; RESET_LIST</h4>

<p>
In nested lists, if your choice of list enumerator for a given level
of list is <kbd>DIGIT</kbd>, <kbd>ALPHA</kbd>, <kbd>alpha</kbd>,
<kbd>ROMAN</kbd> or <kbd>roman</kbd>, you may sometimes want to
reset the list&#8217;s enumerator when you return to that list.
Consider the following:
<br/>
<span class="pre-in-pp">
  Things to do religiously each and every day:
  1. Take care of the dog
     a) walk every day
     b) brush once a week
        - trim around the eyes every fourth brushing
        - don&#8217;t forget to check nails
  2. Feed the cat
     a) soft food on Mon., Wed. and Fri.
     b) dry food on Tues., Thurs. and Sat.
     c) canned tuna on Sunday
</span>
</p>

<p>
Normally, within a nested list, when you return to an
incrementally-enumerated list, the enumerator continues incrementing
from where it left off.  That means, in the example above, the
normal state of affairs for the alpha'ed list under
<br/>
<span class="pre-in-pp">
  2.  Feed the cat
</span>
would be d), e) and f).  The solution, in such a case, is simply
to reset the enumerator&mdash;before <kbd>.ITEM</kbd>&mdash;with
the macro <kbd>.RESET_LIST</kbd>.  By default, with no argument,
<kbd>.RESET_LIST</kbd> resets the enumerator to 1, A, a, I or i
depending on the style of enumerator.  You may, if you wish, pass
<kbd>.RESET_LIST</kbd> a
<a href="definitions.html#numericargument">numeric argument</a>
representing the starting enumerator for the reset (if different
from "1"), although I can&#8217;t at present think of a use for this
feature.
</p>

<h4 id="pad-list-digits" class="docs" style="margin-top: -.25em;">3. Padding digit enumerators &ndash; PAD_LIST_DIGITS</h4>

<h5 class="docs" style="margin-top: 1em;">Arabic digits</h5>

<p style="margin-top: .5em;">
When your choice of enumerators is DIGIT and the number of items
in the list exceeds nine (9), you have to make a design decision:
should mom leave room for the extra numeral in two-numeral digits to
the right or the left of the single-numeral digits?
</p>

<p>
If you want the extra space to the right, invoke the macro
<kbd>.PAD_LIST_DIGITS</kbd> (with no argument), after
<kbd>.LIST</kbd> and before <kbd>.ITEM</kbd>.  This will produce
something like
<br/>
<span class="pre-in-pp">
  8.  List item
  9.  List item
  10. List item
</span>
If you want the extra space to the left, invoke
<kbd>.PAD_LIST_DIGITS</kbd> with the single argument,
<kbd>LEFT</kbd>, which will produce
<br/>
<span class="pre-in-pp">
   8. List item
   9. List item
  10. List item
</span>
</p>

<p>
Of course, if the number of items in the list is less than ten
(10), there&#8217;s no need for PAD_LIST_DIGITS.
</p>

<h5 class="docs" style="margin-top: -.5em;">Roman numerals</h5>

<p style="margin-top: .5em;">
By default, mom sets roman numerals in lists flush left.  The
<kbd>&lt;n&gt;</kbd> argument appended to <kbd>ROMAN&lt;n&gt;</kbd>
or <kbd>roman&lt;n&gt;</kbd> allows her to calculate how much space
to put after each numeral in order to ensure that the text of items
lines up properly.
</p>

<p>
If you&#8217;d like the roman numerals to line
up flush right (ie be padded "left"), simply
invoke <kbd>.PAD_LIST_DIGITS&nbsp;LEFT</kbd> after
<kbd>.LIST&nbsp;ROMAN&lt;n&gt;</kbd> or
<kbd>.LIST&nbsp;roman&lt;n&gt;</kbd> and before <kbd>.ITEM</kbd>.
</p>

<h2 id="number-lines-intro" class="macro-group">Line numbering &ndash; prepend numbers to output lines</h2>

<ul style="margin-left: -.5em;">
  <li><a href="#number-lines">Macro: <b>NUMBER_LINES</b></a>
  <ul style="margin-left: -.5em;">
    <li><a href="#ln-control">Line numbering control (off/suspend, resume)</a></li>
  </ul></li>
  <li><a href="#number-lines-control">Control macros and defaults</a>
  <ul style="margin-left: -.5em;">
    <li><a href="#number-quote-lines">Line numbering control macros for quotes and blockquotes</a></li>
  </ul></li>
</ul>

<p style="margin-top: -.5em;">
When you turn line-numbering on, mom, by default
</p>
<ul style="margin-top: -.5em;">
  <li>numbers every line of paragraph text; line-numbering is
      suspended for all other document processing tags (like
      docheaders, epigraphs, headings, quotes, etc.) and special
      pages (covers, endotes, bibliographies, etc.); be aware,
      though, that if you turn
      <a href="definitions.html#docheader">docheaders</a>
      off (with
      <a href="docprocessing.html#docheader">DOCHEADER</a> OFF)
      and create your own docheader, mom
      <i>will</i> line-number your custom docheader, so turn
      line numbering on afterwards
  </li>
  <li>doesn&#8217;t touch your line length; line numbers are hung
      outside your current left margin (as set with
      <a href="typesetting.html#l-margin">L_MARGIN</a>,
      <a href="typesetting.html#page">PAGE</a>
      or
      <a href="docprocessing.html#doc-left-margin">DOC_LEFT_MARGIN</a>),
      regardless of any indents that may be active
  </li>
  <li>separates line numbers from running text by two
      <a href="definitions.html#figurespace">figure spaces</a>.
  </li>
</ul>

<p>
Mom expects that
<a href="#quote">QUOTE</a>s
and
<a href="#blockquote">BLOCKQUOTE</a>s
will not be line-numbered, however control macros are provided to
enable line numbering for either.
See
<a href="#number-quote-lines">Line numbering control macros for quotes and blockquotes</a>.
</p>

<div class="macro-id-overline">
<h3 id="number-lines" class="macro-id">NUMBER_LINES</h3>
</div>

<div class="box-macro-args">
Macro: <b>NUMBER_LINES</b> <kbd class="macro-args">&lt;start number&gt; [ &lt;which lines to number&gt; [ &lt;gutter&gt; ] ]</kbd>
</div>

<div class="box-macro-args" style="margin-top: 1em;">
Macro: <b>NUMBER_LINES</b>  <kbd class="macro-args">&lt;anything&gt; | RESUME</kbd>
</div>

<p>
NUMBER_LINES does what it says: prints line numbers, to the left of
<a href="definitions.html#outputline">output lines</a>
of paragraph text.  One of the chief reasons for wanting numbered
lines is in order to identify footnotes or endnotes by line number
instead of by a marker in the text.  (See
<a href="#footnotes-by-linenumber">Footnotes by linenumber</a>
for instructions on line-numbered footnotes, and
<a href="#endnote-marker-style">ENDNOTE_MARKER_STYLE LINE</a>
for instructions on line-numbered endnotes.)
</p>

<div class="box-tip">
<p class="tip">
<span class="note">Note:</span>
Do not use <kbd>NUMBER_LINES</kbd> inside 
<a href="#quote">QUOTE</a>
or
<a href="#blockquote">BLOCKQUOTE</a>.
By default, mom expects that quotes and blockquotes will not be
line numbered.  If you wish to enable line numbering for them, you
must invoke
<a href="#number-quote-lines">NUMBER_QUOTE_LINES</a>
or
<a href="#number-quote-lines">NUMBER_BLOCKQUOTE_LINES</a>.
</p>
</div>

<p>
The first time you invoke
<a href="#number-lines">NUMBER_LINES</a>
you must, at a minimum, tell it what line number you want the
<i>next</i>
<a href="definitions.html#outputline">output line</a>
to have.  The optional arguments <kbd>which lines to number</kbd>
and <kbd>gutter</kbd> allow you to state which lines should
be numbered (e.g., every five or every ten lines), and the gutter to
place between line numbers and
<a href="definitions.html#running">running text</a>.
</p>

<p>
For example, if you want mom to number output lines using her defaults,
<span class="pre-in-pp">
  .NUMBER_LINES 1
</span>
will prepend the number, 1, to the next output line and number all
subsequent output lines sequentially.
</p>

<p>
If you want only every five lines numbered, pass mom the optional
<kbd>which lines to number</kbd> argument, like this:
<span class="pre-in-pp">
  .NUMBER_LINES 1 5
</span>
</p>

<div class="box-important">
<p class="tip-top">
<span class="important">GOTCHA!</span>
The argument to <kbd>&lt;which lines to number&gt;</kbd> instructs
mom to number only those lines that are multiples of the argument.
Hence, in the above example, line number <kbd>1</kbd> will
<i>not</i> be numbered, since <kbd>1</kbd> is not a multiple of
<kbd>5</kbd>.
</p>

<p>
If you want line number <kbd>1</kbd> to be numbered, you have to
invoke <kbd>.NUMBER_LINES 1 1</kbd> before the first output line
you want numbered, then study your <i>output</i> copy and determine
where best to insert the following in your <i>input</i> input text:
<br/>
<span class="pre-in-pp">
  .NUMBER_LINES \n[ln] 5
</span>
(The escape, <kbd>\n[ln]</kbd>, ensures that NUMBER_LINES
automatically supplies the correct value for the first argument,
<kbd>&lt;start number&gt;</kbd>.)
</p>

<p class="tip-bottom">
Following this recipe, line number <kbd>1</kbd> will be numbered;
subsequently, only line numbers that are multiples of 5 will be
numbered.  A little experimentation may be required to determine the
best place for it in your input text.
</p>
</div>

<p>
The optional argument, <kbd>&lt;gutter&gt;</kbd>, tells mom how much
space to put between the line numbers and the running text.
<kbd>&lt;gutter&gt;</kbd> does not require (or even accept) a
<a href="definitions.html#unitofmeasure">unit of measure</a>.
The argument you pass to it is the number of
<a href="definitions.html#figurespace">figure spaces</a>
you want between line numbers and running text.
Mom&#8217;s default gutter is two figure spaces.  If
you&#8217;d like a wider gutter, say, four figures spaces, you&#8217;d do
<br/>
<span class="pre-in-pp">
  .NUMBER_LINES 1 1 4
                  |
                  +-- Notice you *must* supply a value
                      for the 2nd argument in order to supply
                      a value for the 3rd.
</span>
</p>

<div class="box-tip">
<p class="tip">
<span class="note">Note:</span>
When giving a value for <kbd>&lt;gutter&gt;</kbd>, you cannot skip
the <kbd>&lt;which lines to number&gt;</kbd> argument.  Either fill
in the desired value, or use two double-quotes ( <kbd>""</kbd> ) to
have mom use the value formerly in effect.
</p>
</div>

<h3 id="ln-control" class="docs" style="margin-top: -.5em;">Off/suspend, resume</h3>

<p style="margin-top: .5em;">
After initializing line numbering, you can suspend it, with the
option to resume, using
<br/>
<span class="pre-in-pp">
  .NUMBER_LINES&nbsp;OFF
</span>
(or <kbd>END, QUIT, X,</kbd> etc).
</p>

<p>To resume line numbering:
<br/>
<span class="pre-in-pp">
  .NUMBER_LINES RESUME
</span>
When you resume, the line number will be the next in sequence
from where you left off.  If that is not what you want&mdash;say
you want to reset the line number to <kbd>1</kbd>&mdash;re-invoke
<kbd>.NUMBER_LINES</kbd> with whatever arguments are needed for the
desired result.
</p>

<div class="box-tip" style="margin-left: 6px;">
<p class="tip">
<span class="note">Additional notes:</span>
</p>
<ol style="margin-top: -1.25em; margin-left: -1.25em; padding-bottom: .5em;">
  <li>In document processing, you may invoke
      <kbd>.NUMBER_LINES</kbd> either before or after
      <kbd>.START</kbd>.  Mom doesn&#8217;t care.
  </li>
  <li style="margin-top: .25em;">If you&#8217;re collating documents with
      <a href="rectoverso.html#collate">COLLATE</a>,
      you should re-invoke, at a minimum,
      <kbd>.NUMBER_LINES&nbsp;1</kbd> for each collated
      document, in order to ensure that each begins with the
      number, <kbd>1</kbd>, prepended to the first line.
  </li>
  <li style="margin-top: .25em;">Occasionally, you may want to
      change the current gutter between line numbers and running
      text without knowing what the next output line number should
      be.  Since NUMBER_LINES requires this number as its first
      argument, in such instances, pass NUMBER_LINES as its first
      argument the escape
      <kbd>\n[ln]</kbd>.
      <br/>
      <span style="display: block; margin-top: .5em;">For example, if you were numbering every 5 lines with a
      gutter of 2 (figure spaces) and you needed to change the
      gutter to 4 (figures spaces),
      <br/>
      <span class="pre-in-pp" style="margin-bottom: -2em;">
  .NUMBER_LINES \n[ln] 5 4
      </span>
      would do the trick.
      </span>
  </li>
  <li style="margin-top: .25em;">If you&#8217;re using
      <a href="#mn-intro">margin notes</a>
      in a document, be sure to set the gutter for margin notes wide
      enough to allow room for the line numbers.
  </li>
  <li style="margin-top: .25em;">Mom (groff, actually), only numbers
      lines <i>to the left</i> of running text.  For aesthetic
      reason, therefore, the use of line numbering when setting a
      document in columns is discouraged.  However, should you wish
      to number lines when setting in columns, make sure the
      <a href="definitions.html#gutter">gutter(s)</a>
      between columns is wide enough to leave room for the numbers.
  </li>
</ol>
</div>

<div class="defaults-container" style="background-color: #ded4bd; border: none;">
<h3 id="number-lines-control" class="docs defaults">NUMBER_LINES control macros and defaults</h3>

<ol style="margin-top: .5em; padding-bottom: .5em;">
  <li><a href="#number-lines-general">Family/font/size/colour</a></li>
  <li><a href="#number-lines-per-section">Reset line numbering after COLLATE</a></li>
  <li><a href="#number-quote-lines">Line numbering control for quotes and blockquotes</a>
  <ul style="padding-left: 1em">
    <li><a href="#number-quote-lines-global">Including QUOTEs and BLOCKQUOTEs in the line numbering scheme</a></li>
    <li><a href="#number-quote-lines-selective">Selectively enabling line numbering for QUOTEs and BLOCKQUOTEs</a></li>
    <li><a href="#number-quote-lines-gutter">Changing the line number gutter for QUOTEs and BLOCKQUOTEs</a></li>
    <li><a href="#number-quote-lines-silent">Silently increment line numbers during  QUOTE and BLOCKQUOTE</a></li>
  </ul></li>
</ol>
</div>

<h4 id="number-lines-general" class="docs" style="margin-top: -1.5em; margin-bottom: .5em;">1. Family/font/size/colour</h4>

<div class="defaults-container" style="padding-bottom: 8px;">
<p class="defaults" style="padding-top: 6px;">
See
<a href="#control-macro-args">Arguments to the control macros</a>.
<br/>
The following NUMBER_LINES control macros may also be
<a href="#grouping">grouped</a>
using LINENUMBER_STYLE.
</p>
<span class="pre defaults">
.LINENUMBER_FAMILY default = prevailing family or document family; default is Times Roman
.LINENUMBER_FONT   default = prevailing font
.LINENUMBER_SIZE   default = +0
.LINENUMBER_COLOR  default = black
</span>
</div>

<h4 id="number-lines-per-section" class="docs" style="margin-top: -1.75em;">2. Reset line numbering after COLLATE</h4>

<p>
After
<a href="rectoverso.html#collate">COLLATE</a>,
line numbering continues from where it left off.  If you would like
each chapter or major document section to begin its line numbering
at &#8220;1&#8221;, invoke
<span class="pre-in-pp">
  .NUMBER_LINES_PER_SECTION
</span>
after
<a href="#number-lines"><kbd>.NUMBER_LINES</kbd></a>.
</p>

<h4 id="number-quote-lines" class="docs" style="margin-top: 0em;">3. Line numbering control macros for QUOTE and BLOCKQUOTE</h4>

<h5 id="number-quote-lines-global" class="docs" style="font-size: 87%">&bull;&nbsp;Including QUOTEs and BLOCKQUOTEs in the line numbering scheme</h5>

<p>
If you&#8217;d like mom to number lines in a
<a href="#quote">QUOTE</a> 
or
<a href="#blockquote">BLOCKQUOTE</a> 
as part of the same order and sequence as paragraph text,
invoke
<span class="pre-in-pp">
  .NUMBER_QUOTE_LINES
</span>
or
<span class="pre-in-pp">
  .NUMBER_BLOCKQUOTE_LINES
</span>
either before or after <kbd>NUMBER_LINES</kbd>.  Both behave
identically with respect to the affected macro (ie <kbd>QUOTE</kbd>
or <kbd>BLOCKQUOTE</kbd>).
</p>

<h5 id="number-quote-lines-selective" class="docs" style="font-size: 87%">&bull;&nbsp;Selectively enabling line numbering for QUOTEs and BLOCKQUOTEs</h5>

<p>
If you&#8217;d like to enable line numbering
selectively for quotes and blockquotes <i>only</i>, enable
<kbd>NUMBER_QUOTE_LINES</kbd> or <kbd>NUMBER_BLOCKQUOTE_LINES</kbd>
first, followed by <kbd>NUMBER_LINES&nbsp;&lt;n&gt;</kbd>, where
<kbd>&lt;n&gt;</kbd> is the first line number of the quote
or blockquote.  Afterwards, enter your <kbd>QUOTE</kbd> or
<kbd>BLOCKQUOTE</kbd>.  When the quote or blockquote is finished (ie
after <kbd>QUOTE&nbsp;OFF</kbd> or <kbd>BLOCKQUOTE&nbsp;OFF</kbd>),
turn line numbering off.  Each subsequent quote or blockquote you
want line numbered requires only <kbd>NUMBER_LINES &lt;n&gt;</kbd>
(with a corresponding <kbd>NUMBER_LINES OFF</kbd>) until you turn
<kbd>NUMBER_QUOTE_LINES</kbd> or <kbd>NUMBER_BLOCKQUOTE_LINES</kbd>
off.
</p>

<p>
Here&#8217;s a recipe where the first line number of quotes starts
repeatedly at &#8220;1&#8221;.
<span class="pre-in-pp">
  &lt;running text&gt;
  .NUMBER_QUOTE_LINES
  .NUMBER_LINES 1
  .QUOTE
  &lt;text of quote&gt;
  .QUOTE OFF
  .NUMBER_LINES OFF
  &lt;further running text&gt;
  .NUMBER_LINES 1
  .QUOTE
  &lt;text of quote&gt;
  .QUOTE OFF
  .NUMBER_LINES OFF
  &lt;further running text&gt;
</span>
</p>

<h5 id="number-quote-lines-gutter" class="docs" style="font-size: 87%">&bull;&nbsp;Changing the line number gutter for QUOTEs and BLOCKQUOTEs</h5>

<p>
Owing to groff&#8217;s restriction on accepting only the figure
space as the line number
<a href="definitions.html#gutter">gutter</a>&#8217;s
unit of measure, it is not possible for line numbers in quotes
or blockquotes to hang outside a document&#8217;s overall left
margin and be reliably flush with the line numbers of paragraph
text.  Conseqently, line numbers in quotes or blockquotes hang
to the left of the quote, separated by the currently active
gutter for <kbd>NUMBER_LINES</kbd>.
</p>

<p>
If you&#8217;d like to change the line number gutter for
quotes or blockquotes, invoke <kbd>NUMBER_QUOTE_LINES</kbd> or
<kbd>NUMBER_BLOCKQUOTE_LINES</kbd> with a digit representing the
number of
<a href="definitions.html#figurespace">figure spaces</a>
you&#8217;d like between the line numbers and the quoted text, like this:
<br/>
<span class="pre-in-pp">
  .NUMBER_QUOTE_LINES 3
</span>
With the above, line numbers in quotes (and only quotes) will have
a gutter of 3 figure spaces.
</p>

<h5 id="number-quote-lines-silent" class="docs" style="font-size: 87%">&bull;&nbsp;Silently increment line numbers during QUOTE and BLOCKQUOTE</h5>

<p>
If you&#8217;ve asked mom not to line number quotes or blockquotes,
but would like line numbering to continue while they&#8217;re
being output (as opposed to mom&#8217;s default behaviour of
<i>suspending</i> incrementing of line numbers during the output of
quotes and blockquotes), invoke
<span class="pre-in-pp">
  .NUMBER_QUOTE_LINES&nbsp;SILENT
</span>
or
<span class="pre-in-pp">
  .NUMBER_BLOCKQUOTE_LINES&nbsp;SILENT
</span>
With these, mom continues to increment line numbers while quotes
or blockquotes are being output, but the line numbers won&#8217;t
appear in the output copy.
</p>

<p>
Once having turned <kbd>NUMBER_QUOTE_LINES</kbd> or
<kbd>NUMBER_BLOCKQUOTE_LINES</kbd> on, you may disable them with
<span class="pre-in-pp">
  .NUMBER_QUOTE_LINES OFF
</span>
or
<span class="pre-in-pp">
  .NUMBER_BLOCKQUOTE_LINES OFF
</span>
</p>

<h2 id="footnote-intro" class="macro-group">Footnotes</h2>

<ul>
  <li><a href="#footnote-behaviour">Footnote behaviour</a>
  <ul style="margin-left: -.5em;">
    <li><a href="#fn-and-punct">Footnote markers and punctuation in the running text</a></li>
  </ul></li>
  <li><a href="#footnote">Tag: FOOTNOTE</a></li>
  <li><a href="#footnote-control">Footnote control macros and defaults</a></li>
</ul>

<p>
For something so complex behind the scenes, footnotes are easy to use.
You just type, for example,
<br/>
<span id="footnote-example" class="pre-in-pp">
  ...the doctrines of Identity as urged by Schelling\c
  .FOOTNOTE
  &lt;footnote about who the hell is Schelling&gt;
  .FOOTNOTE OFF
   were generally the points of discussion presenting the most
  of beauty to the imaginative Morella.
</span>
and be done with it.
(Note the obligatory use of the <kbd>\c</kbd>
<a href="definitions.html#inlines">inline escape</a>,
required whenever your
<a href="#footnote-marker-style">FOOTNOTE_MARKER_STYLE</a>
is either <kbd>STAR</kbd> [star/dagger footnotes] or
<kbd>NUMBER</kbd> [superscript numbers].)
</p>

<p>
After you invoke <kbd>.FOOTNOTE</kbd>, mom takes care of everything:
putting footnote markers in the body of the document, keeping track
of how many footnotes are on the page, identifying the footnotes
themselves appropriately, balancing them properly with the bottom
margin, deferring footnotes that don&#8217;t fit on the page...
Even if you&#8217;re using
<a href="docprocessing.html#columns">COLUMNS</a>,
mom knows what to do, and Does The Right Thing.
</p>

<div class="box-tip">
<p class="tip">
<span class="note">Note:</span>
See
<a href="refer.html">refer.html</a>
for information on using footnotes with the <kbd>refer</kbd>
bibliographic database.
</p>
</div>

<h3 id="footnote-behaviour" class="docs">Footnote behaviour</h3>

<p>
Footnotes can be sly little beasts.  If you&#8217;re writing a
document that&#8217;s footnote-heavy, you might want to read the
following.
</p>

<p>
By default, mom marks footnotes with alternating stars (asterisks),
daggers, and double-daggers.  The first footnote gets a star, the
second a dagger, the third a double-dagger, the fourth two stars,
the fifth two daggers, etc.  If you prefer numbered footnotes, rest
assured mom is happy to oblige.
</p>

<p>
A small amount of vertical whitespace and a short horizontal rule
separate footnotes from the document body.  When
<a href="docprocessing.html#flex-vs-shim">shimming</a>
is enabled, the amount of whitespace
may vary slightly from page to page depending on the number of lines
in the footnotes.  Mom tries for a nice balance between too little
whitespace and too much, but when push comes to shove, she&#8217;ll
usually opt for ample over cramped.  The last lines of footnotes are
always flush with the document&#8217;s bottom margin.
</p>

<p>
When 
<a href="docprocessing.html#flex-vs-shim">flex-spacing</a>
is enabled, the distance between the last line of text and the
first footnote is always the same.
</p>

<p>
If mom sees that a portion of a footnote cannot be fit on its page,
she carries that portion over to the next page.  If an entire
footnote can&#8217;t be fit on its page (ie  FOOTNOTE has been
called too close to the bottom), she defers the footnote to the next
page, but sets it with the appropriate marker from the previous
page.
</p>

<p>
When footnotes occur within cited text, for example a
<a href="#quote">QUOTE</a>
or a
<a href="#blockquote">BLOCKQUOTE</a>,
mom will usually opt for deferring the footnote over to the next
page if it allows her to complete the cited text on one page.
</p>

<p>
In the unfortunate happenstance that a deferred footnote is the
only footnote on its page (ie it&#8217;s marked in the document
body with a star) and the page it&#8217;s deferred to has its own
footnotes, mom separates the deferred footnote from the page&#8217;s
proper footnote(s) with a blank line.  This avoids the confusion
that might result from readers seeing two footnote entries on
the same page identified by a single star (or the number 1 if
you&#8217;ve requested numbered footnotes that begin at 1 on every
page).  The blank line makes it clear that the first footnote entry
belongs to the previous page.
</p>

<p>
In the circumstance where a deferred footnote is not the only one
on its page, and is consequently marked by something other than
a single star, there&#8217;s no confusion and mom doesn&#8217;t
bother with the blank line.  (By convention, the first footnote on
a page is always marked with a single star, so if readers see, say,
a dagger or double-dagger marking the first footnote entry,
they&#8217;ll know the entry belongs to the previous page).
</p>

<p>
Very exceptionally, two footnotes may have to be deferred (e.g., one
occurs on the second to last line of a page, and another on the last
line).  In such a circumstance, mom does not add
a blank after the second deferred footnote.  If you&#8217;d like a blank
line separating both deferred footnotes from any footnotes proper to
the page the deferred ones were moved to, add the space manually by
putting a
<a href="typesetting.html#space"><kbd>.SPACE</kbd></a>
command at the end of the footnote text, before
<kbd>.FOOTNOTE&nbsp;OFF</kbd> (or <kbd>X, QUIT, EXIT</kbd>, etc).
</p>

<p>
Obviously, deferred footnotes aren&#8217;t an issue if you request
numbered footnotes that increase incrementally throughout the whole
document&mdash;yet another convenience mom has thought of.
</p>

<p>
While mom&#8217;s handling of footnotes is sophisticated,
and tries to take nearly every imaginable situation under which they
might occur into account, some situations are simply impossible from
a typographic standpoint.  For example, if you have a
<a href="#head">HEAD</a>
near the bottom of a page and the page has some footnotes on it, mom
may simply not have room to set any text under the head (normally,
she insists on having room for at least one line of text beneath
a head).  In such an instance, mom will either set the head, with
nothing under it but footnotes, or transfer the head to the next
page.  Either way, you&#8217;ll have a gaping hole at the bottom
of the page.  It&#8217;s a sort of typographic Catch-22, and can
only be resolved by you, the writer or formatter of the document,
adjusting the type on the offending page so as to circumvent the
problem.
</p>

<h3 id="fn-and-punct" class="docs">Footnote markers and punctuation in the running text</h3>

<ol style="margin-left: -1.25em;">
  <li><a href="#fn-and-punct-fill">&#8220;Fill&#8221; modes &ndash; JUSTIFY, or QUAD LEFT | CENTER | RIGHT</a></li>
  <li><a href="#fn-and-punct-nofill">&#8220;No-fill&#8221; modes &ndash; LEFT, CENTER, RIGHT</a></li>
</ol>

<h4 id="fn-and-punct-fill" class="docs">1. &#8220;Fill&#8221; modes &ndash; JUSTIFY, or QUAD LEFT | CENTER | RIGHT</h4>

<p>
In
<a href="definitions.html#filled">fill</a>
modes, the correct way to enter the line after
<kbd>.FOOTNOTE&nbsp;OFF</kbd> is to input it as if it&#8217;s
literally a continuation of the input line you were entering before
you invoked <kbd>.FOOTNOTE</kbd>.  Therefore, if necessary, the
input line may have to begin with space(s) or a punctuation mark, as
in the two following examples.
</p>

<div id="examples-footnotes-1" class="examples-container" style="padding-bottom: 1em;">
<div class="examples" style="margin-top: 0; margin-bottom: -.25em;">Example 1</div>
<span class="pre">
A line of text,\c
.FOOTNOTE
A footnote line.
.FOOTNOTE OFF
 broken up with a comma.
^
(last line begins with a literal space)
</span>
</div>

<div id="examples-footnotes-2" class="examples-container" style="margin-top: 1em; padding-bottom: 1em;">
<div class="examples" style="margin-top: 0; margin-bottom: -.25em;">Example 2</div>
<span class="pre">
A line of text\c
.FOOTNOTE
A footnote line.
.FOOTNOTE OFF
, broken up with a comma.
^
(last line begins with a comma and a space)
</span>
</div>

<p>
Example 1 produces, on output
<br/>
<span class="pre-in-pp">
  A line of text,* broken up with a comma.
</span>
Example 2 produces
<br/>
<span class="pre-in-pp">
  A line of text*, broken up with a comma.
</span>
Care must be taken, though, if the punctuation mark that begins the
line after <kbd>.FOOTNOTE&nbsp;OFF</kbd> is a period (dot).  You
<b><i>must</i></b> begin such lines with <kbd>\&amp;.</kbd>, like
this:
<br/>
<span class="pre-in-pp">
  ...end of sentence\c
  .FOOTNOTE
  A footnote line.
  .FOOTNOTE OFF
  \&amp;.  A new sentence...
</span>
If you omit the <kbd>\&amp;.</kbd>, the line will vanish!
</p>

<div class="box-tip">
<p class="tip">
<span class="note">Note:</span>
The document element tags,
<a href="#epigraph">EPIGRAPH</a>
and
<a href="#blockquote">BLOCKQUOTE</a>,
imply a fill mode, therefore these instructions also apply when you
insert a footnote into epigraphs or blockquotes.
</p>
</div>

<h4 id="fn-and-punct-nofill" class="docs">2. &#8220;No-fill&#8221; modes &ndash; LEFT, CENTER, RIGHT</h4>

<p>
In
<a href="definitions.html#filled">no-fill</a>
modes, you must decide a) whether text on the <i>input</i> line
after <kbd>.FOOTNOTE&nbsp;OFF</kbd> is to be joined to the
<i>output</i> line before <kbd>.FOOTNOTE</kbd> was invoked, or b)
whether you want the <i>output</i> text to begin on a new line.
</p>

<p>
In the first instance, simply follow the instructions,
<a href="#fn-and-punct-fill">above</a>,
for fill modes.
</p>

<p>
In the second instance, you must explicitly tell mom that
you want input text after <kbd>.FOOTNOTE&nbsp;OFF</kbd> to
begin on a new output line.  This is accomplished by passing
<kbd>.FOOTNOTE&nbsp;OFF</kbd> (or <kbd>QUIT, END, X,</kbd> etc) an
additional argument: <kbd>BREAK</kbd> or <kbd>BR</kbd>.
</p>

<p>
Study the two examples below to understand the difference.
</p>

<div id="examples-footnotes-3" class="examples-container" style="padding-bottom: 1em;">
<div class="examples" style="margin-top: 0; margin-bottom: -.25em;">Example 1</div>
<span class="pre">
.LEFT
A line of text\c
.FOOTNOTE
A footnote line
.FOOTNOTE OFF
that carries on after the footnote.
</span>
</div>

<div id="examples-footnotes-4" class="examples-container" style="margin-top: 1em; padding-bottom: 1em;">
<div class="examples" style="margin-top: 0; margin-bottom: -.25em;">Example 2</div>
<span class="pre">
.LEFT
A line of text\c
.FOOTNOTE
A footnote line
.FOOTNOTE OFF BREAK
that doesn&#8217;t carry on after the footnote.
</span>
</div>

<p>
Example 1, on output, produces
<br/>
<span class="pre-in-pp">
  A line of text* that carries on after the footnote.
</span>
whereas Example 2 produces
<span class="pre-in-pp">
  A line of text*
  that doesn&#8217;t carry on after the footnote.
</span>
The distinction becomes particularly important if you like to see
punctuation marks come <i>after</i> footnote markers.  In no-fill
modes, that&#8217;s accomplished like this:
<br/>
<span class="pre-in-pp">
  .LEFT
  A line of text\c
  .FOOTNOTE
  A footnote line
  .FOOTNOTE OFF
  ,
  broken up with a comma.
</span>
The output of the above looks like this:
<br/>
<span class="pre-in-pp">
  A line of text*,
  broken up with a comma.
</span>
</p>

<div class="box-tip">
<p class="tip">
<span class="note">Note:</span>
The document element tag,
<a href="#quote">QUOTE</a>,
implies a no-fill mode, therefore these instructions also apply when
you insert footnotes into quotes.
</p>
</div>

<div class="macro-id-overline">
<h3 id="footnote" class="macro-id">FOOTNOTE</h3>
</div>

<div class="box-macro-args">
Tag: FOOTNOTE <kbd class="macro-args">&lt;toggle&gt; [ BREAK | BR ] | INDENT LEFT | RIGHT | BOTH &lt;indent value&gt;</kbd>
</div>

<p class="requires">
&bull;&nbsp;<kbd><span style="font-style: normal">&lt;indent value&gt;</span></kbd> requires a <a href="definitions.html#unitofmeasure">unit of measure</a>
<br/>
See <span style="font-style: normal"><a href="#footnote-note">HYPER-IMPORTANT NOTE</a></span>.
</p>

<p>
FOOTNOTE is a toggle macro, therefore invoking it on a line by
itself allows you to enter a footnote in the body of a document.
Invoking it with any argument other than INDENT (ie <kbd>OFF,
QUIT, END, X...</kbd>) tells mom you&#8217;re finished.
</p>

<p>
Footnotes are the only element of
<a href="definitions.html#running">running text</a>
that are not affected by the typesetting
<a href="typesetting.html#indents">indent macros</a>.
In the unlikely event that you want a page&#8217;s footnotes to
line up with a running indent, invoke <kbd>.FOOTNOTE</kbd> with
the <kbd>INDENT</kbd> argument and pass it an indent direction and
indent value. <kbd>L, R,</kbd> and <kbd>B</kbd> may be used in place
of <kbd>LEFT, RIGHT,</kbd> and <kbd>BOTH</kbd>. FOOTNOTE must be
invoked with <kbd>INDENT</kbd> for every footnote you want indented;
mom does not save any footnote indent information from invocation to
invocation.
</p>

<div class="box-tip">
<p class="tip">
<span class="note">Note:</span>
If a footnote runs to more than one paragraph, do <i>not</i> begin
the footnote with the
<a href="#pp">PP</a>
tag.  Use <kbd>.PP</kbd> only to introduce subsequent paragraphs.
</p>
</div>

<div id="footnote-note" class="box-tip">
<p class="tip-top">
<span class="note">HYPER-IMPORTANT NOTE:</span>
The final word on the
<a href="definitions.html#inputline">input line</a>
that comes immediately before FOOTNOTE <i>must</i> terminate with a
<kbd><a href="typesetting.html#join">\c</a></kbd>
inline escape if your
<a href="#footnote-marker-style">FOOTNOTE_MARKER_STYLE</a>
is either <kbd>STAR</kbd> or <kbd>NUMBER</kbd>.  See the
<a href="#footnote-example">footnote example</a>
above.
</p>

<p>
Additionally, in
<a href="definitions.html#filled">fill</a>
modes
(<a href="typesetting.html#justify">JUSTIFY</a>
or
<a href="typesetting.html#quad">QUAD</a>),
the line <i>after</i> a <kbd>.FOOTNOTE&nbsp;OFF</kbd> should be
entered as if there were no interruption in the input text, ie
the line should begin with a literal space or punctuation mark (see
explanation and examples
<a href="#fn-and-punct">here</a>).
</p>

<p>
In
<a href="definitions.html#filled">no-fill</a>
modes, the optional argument <kbd>BREAK</kbd> or <kbd>BR</kbd> may
be used after the <kbd>OFF</kbd> (or <kbd>QUIT, END, X,</kbd> etc.)
argument to instruct mom not to join the next input line to the
previous output.  See
<a href="#fn-and-punct-nofill">here</a>
for a more complete explanation, with examples.
</p>

<p class="tip-bottom">
Do not use the <kbd>\c</kbd> inline escape if your
FOOTNOTE_MARKER_STYLE is <kbd>LINE</kbd>, or if you have disabled
footnote markers with
<kbd><a href="#footnote-markers">.FOOTNOTE_MARKERS OFF</a></kbd>.
In these instances, the line after <kbd>.FOOTNOTE&nbsp;OFF</kbd>
should be entered normally.
</p>
</div>

<div class="defaults-container" style="background-color: #ded4bd; border: none;">
<h3 id="footnote-control" class="docs defaults">FOOTNOTE control macros macros and defaults</h3>

<ol style="margin-top: .5em; padding-bottom: .5em;">
  <li><a href="#footnote-general">Family/font/size/colour/lead/quad</a></li>
  <li><a href="#footnote-markers">Footnote markers</a> &ndash; on or off</li>
  <li><a href="#footnote-marker-style">Footnote marker style</a> &ndash; star+dagger or numbered
  <ul style="margin-left: -.5em; list-style-type: disc;">
    <li><a href="#footnote-number-placeholders">Left padding of footnote numbers</a></li>
  </ul></li>
  <li><a href="#footnotes-by-linenumber">Footnotes by line number</a>
  <ul style="margin-left: -.5em; list-style-type: disc;">
    <li><a href="#footnote-linenumber-brackets">FOOTNOTE_LINENUMBER_BRACKETS</a></li>
    <li><a href="#footnote-linenumber-separator">FOOTNOTE_LINENUMBER_SEPARATOR</a></li>
    <li><a href="#footnotes-run-on">FOOTNOTES_RUN_ON</a> &ndash; line-numbered footnotes only</li>
  </ul></li>
  <li><a href="#reset-footnote-number">Reset footnote number</a> &ndash; set footnote marker number to 1</li>
  <li><a href="#footnote-space">Inter-footnote spacing</a></li>
  <li><a href="#footnote-rule">Footnote rule</a> &ndash; on or off</li>
  <li><a href="#footnote-rule-length">Footnote rule length</a> &ndash; length of footnote separator rule</li>
  <li><a href="#footnote-rule-weight">Footnote rule weight</a> &ndash; weight of footnote separator rule</li>
  <li><a href="#footnote-rule-adj">Adjust vertical position of footnote separator rule</a></li>
</ol>
</div>

<h4 id="footnote-general" class="docs" style="margin-top: -1.5em; margin-bottom: .5em;">1. Family/font/size/colour/lead/quad</h4>

<div class="defaults-container" style="padding-bottom: 8px;">
<p class="defaults" style="padding-top: 6px;">
See
<a href="#control-macro-args">Arguments to the control macros</a>.
<br/>
The following FOOTNOTE control macros may also be
<a href="#grouping">grouped</a>
using FOOTNOTE_STYLE.
</p>
<span class="pre defaults">
.FOOTNOTE_FAMILY    default = prevailing document family; default is Times Roman
.FOOTNOTE_FONT      default = roman
.FOOTNOTE_SIZE      default = -2 (points)
.FOOTNOTE_COLOR     default = black
.FOOTNOTE_AUTOLEAD  default = 2 points (typeset); single-spaced (typewrite)
.FOOTNOTE_QUAD      default = same as paragraphs
</span>
</div>

<h4 id="footnote-markers" class="docs" style="margin-top: -1.25em;">2. Footnote markers &ndash; FOOTNOTE_MARKERS</h4>

<p>
If you don&#8217;t want footnote markers, in either the body of
the document or beside footnote entries themselves, toggle them
off with <kbd>.FOOTNOTE_MARKERS&nbsp;OFF</kbd> (or <kbd>END, QUIT,
X</kbd>...).  This means, of course, that you&#8217;ll
have to roll your own.  If you want them back on, invoke
<kbd>.FOOTNOTE_MARKERS</kbd> with no argument.  Footnote markers are
on by default.
</p>

<p>
If FOOTNOTE_MARKERS are disabled, do not use the <kbd>\c</kbd>
inline escape to terminate the line before <kbd>.FOOTNOTE</kbd>.
</p>

<h4 id="footnote-marker-style" class="docs" style="margin-top: -.25em;">3. Footnote marker style &ndash; FOOTNOTE_MARKER_STYLE</h4>

<p>
Mom gives you two choices of footnote marker style: star+dagger (see
<a href="#footnote-behaviour">footnote behaviour</a>
above), or numbered.
</p>

<p>
<kbd>.FOOTNOTE_MARKER_STYLE STAR</kbd> gives you star+dagger (the
default).  There is a limit of 10 footnotes per page with this
style.
</p>

<p>
<kbd>.FOOTNOTE_MARKER_STYLE NUMBER</kbd> gives you superscript
numbers, both in the document body and in the footnote entries
themselves.  By default, footnote numbers increase incrementally
(prev. footnote number + 1) throughout the whole document.  You
can ask mom to start each page&#8217;s footnote numbers at 1 with
<kbd>.RESET_FOOTNOTE_NUMBER</kbd>
(<a href="#reset-footnote-number">see below</a>.)
</p>

<p>
If your
<a href="docprocessing.html#printstyle">PRINTSTYLE</a>
is <kbd>TYPEWRITE</kbd> and you would prefer that the footnotes
themselves not use superscript numbers, you may pass
<kbd>.FOOTNOTE_MARKER_STYLE NUMBER</kbd> an additional argument:
<kbd>NO_SUPERSCRIPT</kbd>.  While the marker in the text will still
be superscript, the footnotes themselves will be identified with
normal-sized, base aligned numbers, surrounded by parentheses.
</p>

<h5 id="footnote-number-placeholders" class="docs">Left padding of footnote numbers</h5>

<p>
When footnote numbering is enabled, in order to ensure that the
left margin of footnote text aligns regardless of the footnote
number, you sometimes have to pad the footnote numbers.  This will
be the case any time the footnote numbers change from 9 to 10 on
the same page, or from 99 to 100.  Consider this scenario:
<br/>
<span class="pre-in-pp">
  <sup>9</sup>&nbsp;Footnote text
  <sup>10</sup>&nbsp;Footnote text
  <sup>11</sup>&nbsp;Footnote text
</span>
As you can see, the left margins of the footnotes are not aligned.
</p>

<p>
In order to correct this, use the macro
<kbd>.FOOTNOTE_NUMBER_PLACEHOLDERS</kbd>, which takes a single
argument: the number of placeholders in the longer digit.  For
example, placed at an appropriate point in your input file,
<kbd>.FOOTNOTE_NUMBER_PLACEHOLDERS&nbsp;2</kbd> causes the above
example to come out like this:
<br/>
<span class="pre-in-pp">
  <sup> 9</sup> Footnote text
  <sup>10</sup> Footnote text
  <sup>11</sup> Footnote text
</span>
Given the impossibility of knowing in advance when the number of
placeholders required for footnote numbers will change, you must
study your <i>output</i> file to determine where to insert this
macro into your <i>input</i> file.
</p>

<p>
Obviously, mom does not provide a default for
<kbd>.FOOTNOTE_NUMBER_PLACEHOLDERS</kbd>.
</p>

<div class="box-tip">
<p class="tip">
<span class="note">Note:</span>
<kbd>.FOOTNOTE_NUMBER_PLACEHOLDERS</kbd> affects both superscript
footnote numbers, and, in
<a href="docprocessing.html#printstyle">PRINTSTYLE TYPEWRITE</a>,
the normal, base-aligned numbers surrounded by parentheses that you
get with
<kbd>.FOOTNOTE_MARKER_STYLE&nbsp;NUMBER&nbsp;NO_SUPERSCRIPT</kbd>.
</p>
</div>

<h4 id="footnotes-by-linenumber" class="docs" style="margin-top: -.25em;">4. Footnotes by line number &ndash; FOOTNOTE_MARKER_STYLE LINE</h4>

<p>
FOOTNOTE_MARKER_STYLE with the argument, <kbd>LINE</kbd> lets you
have footnotes which are identified by line number, rather than by a
marker in the text.  (Note that
<a href="#number-lines">NUMBER_LINES</a>
must be enabled in order to use this marker style.)
</p>

<p>
With FOOTNOTE_MARKER_STYLE <kbd>LINE</kbd>, mom will identify
footnotes either by single line numbers, or line ranges.  If
what you want is a single line number, you need only invoke
<kbd>.FOOTNOTE</kbd>, <i>without the terminating</i> <kbd>\c</kbd>,
at the appropriate place in running text.  Input lines after the
footnote has been terminated (e.g., with <kbd>.FOOTNOTE OFF</kbd>)
must begin at the left margin.
</p>

<p>
If you want a range of line numbers (e.g.,&nbsp;[5-11]&nbsp;),
insert, directly into the first line of the range you want,
the <a href="definitions.html#inlines">inline escape</a>,
<kbd>\*[FN_MARK]</kbd>.  For the terminating line number of the
range, you need only invoke <kbd>.FOOTNOTE</kbd> (again, without the
terminating <kbd>\c</kbd>); mom is smart enough to figure out that
where <kbd>.FOOTNOTE</kbd> was invoked represents the terminating
line number.  Range-numbered footnotes are always output on the
page where <kbd>.FOOTNOTE</kbd> was invoked, not the page where
<kbd>\*[FN_MARK]</kbd> appears (subject, of course, to the rules for
footnotes that fall too close to the bottom of a page, as outlined
<a href="#footnote-rules">here</a>).
</p>

<p>
The behaviour of line-numbered footnotes can be controlled with the
macros:
<br/>
<span style="display: inline-block; margin-left: 2em; margin-top: .5em;"><a href="#footnote-linenumber-brackets">FOOTNOTE_LINENUMBER_BRACKETS</a></span>
<br/>
<span style="margin-left: 2em;"><a href="#footnote-linenumber-separator">FOOTNOTE_LINENUMBER_SEPARATOR</a></span>
<br/>
<span style="margin-left: 2em;"><a href="#footnotes-run-on">FOOTNOTES_RUN_ON</a></span>
</p>

<div style="margin-left: 1.25em;">
<h5 id="footnote-linenumber-brackets" class="docs" style="margin-top: -.25em;">&bull;&nbsp;FOOTNOTE_LINENUMBER_BRACKETS</h5>

<p style="margin-left: .5em;">
Mom, by default, surrounds footnote line numbers with square
brackets.  The style of the brackets may be changed with the macro
<br/>
<span class="pre-in-pp">
  .FOOTNOTE_LINENUMBER_BRACKETS
</span>
which takes one of three possible arguments: <kbd>PARENS</kbd>
(round brackets), <kbd>SQUARE</kbd> (the default) or
<kbd>BRACES</kbd> (curly braces).  If you prefer a shortform, the
arguments, <kbd>(</kbd>, <kbd>[</kbd> or <kbd>{</kbd> may be used
instead.
</p>

<p style="margin-left: .5em;">Thus, for example, either
<br/>
<span class="pre-in-pp">
  .FOOTNOTE_LINENUMBER_BRACKETS PARENS
</span>
or
<br/>
<span class="pre-in-pp">
  .FOOTNOTE_LINENUMBER_BRACKETS (
</span>
will surround footnote line numbers with round brackets.
</p>

<h5 id="footnote-linenumber-separator" class="docs" style="margin-top: -.25em;">&bull;&nbsp;FOOTNOTE_LINENUMBER_SEPARATOR</h5>

<p style="margin-left: .5em;">
If you don&#8217;t want the numbers enclosed in brackets, you
may tell mom to use a &#8220;separator&#8221; instead.  A common
separator would be the colon, but it can be anything you like.
The macro to do this is
<br/>
<span class="pre-in-pp">
  .FOOTNOTE_LINENUMBER_SEPARATOR
</span>
which takes, as its single argument, the separator you want.  For
safety and consistency&#8217;s sake, always enclose the argument in
double-quotes.  The separator can be composed of any valid groff
character, or any combination of characters.
</p>

<p style="margin-left: .5em;">
<b>A word of caution:</b> when using a separator, mom doesn&#8217;t
insert any space after the separator.  Hence, if you want space
(you probably do), you must make the space part of the argument you
pass to FOOTNOTE_LINENUMBER_SEPARATOR.  For example, to get a colon
separator with a space after it, you&#8217;d do
<br/>
<span class="pre-in-pp">
  .FOOTNOTE_LINENUMBER_SEPARATOR ": "
</span>
</p>

<h5 id="footnotes-run-on" class="docs" style="margin-top: -1em;">&bull;&nbsp;FOOTNOTES_RUN_ON</h5>

<p style="margin-left: .5em;">
Finally, if your footnote marker style is <kbd>LINE</kbd>, you may
instruct mom to do &#8220;run-on style&#8221; footnotes.  Run-on
footnotes do not treat footnotes as discrete entities, ie each
beginning on a new line.  Rather, each footnote is separated from
the footnote before it by horizontal space in the running line, so
that the footnotes on any given page form a continuous block, like
lines in a paragraph.
</p>

<p style="margin-left: .5em;">
The macro to get mom to run footnotes on is
<br/>
<span class="pre-in-pp">
  .FOOTNOTES_RUN_ON
</span>
Invoked by itself, it turns the feature on.  Invoked with any other
argument (<kbd>OFF, NO</kbd>, etc.), it turns the feature off.
It is generally not a good idea to turn the feature on and off
during the course of a single document.  If you do, mom will issue
a warning if there&#8217;s going to be a problem.  However, it is
always perfectly safe to enable/disable the feature after
<a href="rectoverso.html#collate">COLLATE</a>.
</p>
</div>

<h4 id="reset-footnote-number" class="docs" style="margin-top: -.25em;">5. Reset footnote number &ndash; RESET_FOOTNOTE_NUMBER</h4>

<p>
<kbd>.RESET_FOOTNOTE_NUMBER</kbd>, by itself, resets footnote
numbering so that the next footnote you enter is numbered 1.
</p>

<p>
<kbd>.RESET_FOOTNOTE_NUMBER&nbsp;PAGE</kbd> tells mom to start every
page&#8217;s footnote numbering at 1.
</p>

<h4 id="footnote-space" class="docs" style="margin-top: -.25em;">6. Inter-footnote spacing &ndash; FOOTNOTE_SPACING</h4>

<p>
If you&#8217;d like some space between footnotes, you can
have mom put it in for you by invoking <kbd>.FOOTNOTE_SPACING</kbd>
with an argument representing the amount of extra space you&#8217;d
like.  The argument to FOOTNOTE_SPACING requires a
<a href="definitions.html#unitofmeasure">unit of measure</a>.
</p>

<p>
In the following example, footnotes will be separated from each
other by 3
<a href="definitions.html#picaspoints">points</a>.
<br/>
<span class="pre-in-pp">
  .FOOTNOTE_SPACING 3p
</span>
</p>

<div class="box-tip">
<p class="tip">
<span class="note">Note:</span>
If you&#8217;re using footnotes for references generated from the
refer database (see
<a href="refer.html">refer.html</a>),
correct MLA style requires a full linespace between footnotes, which
you can accomplish with <kbd>.FOOTNOTE_SPACING&nbsp;1v</kbd>.
</p>
</div>

<h4 id="footnote-rule" class="docs" style="margin-top: -.25em;">7. Footnote rule &ndash; FOOTNOTE_RULE</h4>

<p>
If you don&#8217;t want a footnote separator rule, toggle it off with
<kbd>.FOOTNOTE_RULE&nbsp;OFF</kbd> (or <kbd>END, QUIT, X</kbd>...).
Toggle it back on by invoking <kbd>.FOOTNOTE_RULE</kbd> with no
argument.  The default is to print the rule.
</p>

<h4 id="footnote-rule-length" class="docs" style="margin-top: -.25em;">8. Footnote rule length &ndash; FOOTNOTE_RULE_LENGTH</h4>

<p>
If you want to change the length of the footnote separator rule,
invoke <kbd>.FOOTNOTE_RULE_LENGTH</kbd> with a length, like this,
<br/>
<span class="pre-in-pp">
    .FOOTNOTE_RULE_LENGTH 1i
</span>

which sets the length to 1 inch.  Note that a
<a href="definitions.html#unitofmeasure">unit of measure</a>
is required.  The default is 4
<a href="definitions.html#picaspoints">picas</a>
for both
<a href="docprocessing.html#printstyle">PRINTSTYLES</a>.
</p>

<h4 id="footnote-rule-weight" class="docs" style="margin-top: -.25em;">9. Footnote rule weight &ndash; FOOTNOTE_RULE_WEIGHT</h4>

<p>
If you want to change the weight (&#8220;thickness&#8221;) of the
footnote separator rule, invoke <kbd>.FOOTNOTE_RULE_WEIGHT</kbd>
with the desired weight.  The weight is measured in
<a href="definitions.html#picaspoints">points</a>;
however, do not append the
<a href="definitions.html#unitofmeasure">unit of measure</a>,
<kbd>p</kbd>, to the argument.
</p>

<p>
Mom&#8217;s default footnote rule weight is 1/2 point.  If
you&#8217;d like a 1-point rule instead,<br/>
<span class="pre-in-pp">
  .FOOTNOTE_RULE_WEIGHT 1
</span>
is how you&#8217;d get it.
</p>

<h4 id="footnote-rule-adj" class="docs" style="margin-top: -.25em;">10. Adjust vertical position of footnote separator rule &ndash; FOOTNOTE_RULE_ADJ</h4>

<p>
The footnote separator rule is a rule whose bottom edge falls
on the 
<a href="definitions.html#baseline">baseline</a>
(at the footnote
<a href="definitions.html#leading">leading</a>)
one line above the first line of a page&#8217;s footnotes.  By default,
mom raises the rule 3
<a href="definitions.html#picaspoints">points</a>
from the baseline so that the separator and the footnotes don&#8217;t
look jammed together.  If you&#8217;d prefer a different vertical
adjustment, invoke <kbd>.FOOTNOTE_RULE_ADJ</kbd> with the
amount you&#8217;d like.  For example
<br/>
<span class="pre-in-pp">
  .FOOTNOTE_RULE_ADJ 4.25p
</span>
raises the rule by 4-1/4 points.  Note that you can only raise
the rule, not lower it.  A
<a href="definitions.html#unitofmeasure">unit of measure</a>
is required.
</p>

<div class="box-tip">
<p class="tip">
<span class="note">Note:</span>
If your document
<a href="definitions.html#leading">leading</a>
is 2
<a href="definitions.html#picaspoints">points</a>
or less (e.g your
<a href="definitions.html#ps">point size</a>
is 10 and your linespacing is 10, 11, or 12), lowering mom&#8217;s
default footnote rule adjustment will almost certainly give you
nicer looking results than leaving the adjustment at the default.
Furthermore, you can invoke <kbd>.FOOTNOTE_RULE_ADJ</kbd> on any
page in which footnotes appear, or in any column, so that the
placement of the footnote rule can be changed on-the-fly, should you
wish.
</p>
</div>

<h2 id="endnote-intro" class="macro-group">Endnotes</h2>

<ul style="margin-left: -.5em;">
  <li><a href="#endnote-behaviour">Endnotes behaviour</a>
  <ul style="margin-left: -.5em;">
    <li><a href="#endnote-columns">Endnotes and columnar documents</a></li>
  </ul></li>
  <li><a href="#endnote">Tag: ENDNOTE</a></li>
  <li><a href="#endnotes">Macro: <b>ENDNOTES</b></a>&mdash;tell mom to output endnotes</li>
  <li><a href="#endnote-control">ENDNOTES control macros and defaults</a></li>
</ul>

<p>
Embedding endnotes into mom documents is accomplished the same way
as embedding
<a href="#footnote-intro">footnotes</a>.
The example below is identical to the one shown in the
<a href="#footnote-example">introduction to footnotes</a>,
except that <kbd>.FOOTNOTE</kbd> has been replaced with
<kbd>.ENDNOTE</kbd>.
</p>

<div id="examples" class="examples-container" style="padding-bottom: 1em;">
<div class="examples" style="margin-top: 0; margin-bottom: -.25em;">Example</div>
<span id="endnote-example" class="pre">
  ...the doctrines of Identity as urged by Schelling\c
  .ENDNOTE
  &lt;endnote about who the hell is Schelling&gt;
  .ENDNOTE OFF
   were generally the points of discussion presenting the most
  of beauty to the imaginative Morella.
</span>
</div>

<p>
As with footnotes, note the obligatory use of the <kbd>\c</kbd>
<a href="definitions.html#inlines">inline escape</a>
when your
<a href="#endnote-marker-style">ENDNOTE_MARKER_STYLE</a>
is <kbd>NUMBER</kbd> or <kbd>SUPERSCRIPT</kbd> (both of which mark
endnotes references in
<a href="definitions.html#running">running text</a>
with superscript numbers).  When the marker style is
<kbd>LINE</kbd>, you must <i>not</i> use the <kbd>\c</kbd>
escape.
</p>

<p>
Endnotes differ from footnotes in two ways (other than the fact that
endnotes come at the end of a document whereas footnotes appear in
the body of the document):
</p>

<ol style="margin-top: -.5em;">
  <li>When your ENDNOTE_MARKER_STYLE is <kbd>NUMBER</kbd> or
      <kbd>SUPERSCRIPT</kbd>, endnotes are always numbered
      incrementally, starting at &#8220;1&#8221;.
  </li>
  <li>Endnotes must be output explicitly; mom does not output
      them for you.  In
      <a href="rectoverso.html#collate">collated</a>
      documents, this allows you to choose whether you want the
      endnotes to appear at the end of each chapter or article in a
      document, or grouped together at the very end of the document.
  </li>
</ol>

<p>
Within endnotes, you may use the document element tags
<a href="#pp">PP</a>,
<a href="#quote">QUOTE</a>
and
<a href="#blockquote">BLOCKQUOTE</a>.
This provides the flexibility to create endnotes that run to several
paragraphs, as well as to embed cited text within endnotes.
</p>

<p>
Should you wish to change the appearance of quotes or blockquotes
that appear within endnotes, you may do so with the
<a href="#quote-control">quote control macros</a>
or
<a href="#blockquote-control">blockquote control macros</a>.
However, you must make the changes <i>within</i> each endnote,
prior to invoking <kbd>.QUOTE</kbd> or <kbd>.BLOCKQUOTE</kbd>,
and undo them prior to terminating the endnote (ie before
<kbd>.ENDNOTE&nbsp;OFF</kbd>), otherwise the changes will affect
subsequent quotes and blockquotes that appear in the document body
as well.
</p>

<div class="box-tip">
<p class="tip">
<span class="note">Note:</span>
See
<a href="refer.html">refer.html</a>
for information on using endnotes with the <kbd>refer</kbd>
bibliographic database.
</p>
</div>

<h3 id="endnote-behaviour" class="docs">Endnotes behaviour</h3>

<p>
When you output endnotes (with
<kbd><a href="#endnotes">.ENDNOTES</a></kbd>),
mom finishes processing the last page of your document, then breaks
to a new page for printing the endnotes.  If the document type is
<kbd><a href="docprocessing.html#doctype">CHAPTER</a></kbd>,
the centre part of the
<a href="definitions.html#header">header</a>
(or footer), which, by default, contains a chapter number or title,
is removed.
</p>

<p>
By default, mom starts the endnotes page with a bold, centred head,
&#8220;ENDNOTES&#8221;.  Subsequently, for each section in a
<a href="rectoverso.html#collate-intro">collated</a>
document (e.g., chapters in a book), she identifies the section in bold
type, flush left and underscored, followed by one-half linespace.
Endnotes pertaining to the section are output underneath, identified
by superscript numbers.  The text of the endnotes themselves is
indented to the right of the numbers.
</p>

<div class="box-tip">
<p class="tip">
<span class="note">Note:</span>
The one-half linespace between section identifiers and the endnotes
themselves, plus the need to group identifiers and endnotes sensibly,
means that mom cannot guarantee perfectly aligned bottom margins.
This is an unavoidable consequence of the structure of endnotes.
</p>
</div>

<p>
Of course, all the defaults, as well as the overall style of the
endnotes pages, can be changed with the
<a href="#endnote-control">endnote control macros</a>.
The attentive will notice that endnotes have an awful lot of control
macros.  This is because endnotes are like a mini-document unto
themselves, and therefore need not be bound by the style parameters
of the body of the document.
</p>

<h3 id="endnote-columns" class="docs">Endnotes and columnar documents</h3>

<p>
If your document is set in columns (see
<a href="docprocessing.html#columns">COLUMNS</a>),
mom gives you the option to have endnotes appear in either
the column format or set to the full page width.  See
<a href="#endnotes-no-columns">ENDNOTES_NO_COLUMNS</a>.
</p>

<div class="macro-id-overline">
<h3 id="endnote" class="macro-id">ENDNOTE</h3>
</div>

<div class="box-macro-args">
Macro: <b>ENDNOTE</b> <kbd class="macro-args">&lt;toggle&gt; [ BREAK | BR ]</kbd>
</div>
<p class="requires">
See <span style="font-style: normal"><a href="#endnote-note">HYPER-IMPORTANT NOTE</a></span>
</p>

<p>
ENDNOTE is a toggle macro, therefore invoking it on a line by itself
allows you to enter an endnote in the body of a document.  Invoking
it with any other argument (ie <kbd>OFF, QUIT, END, X...</kbd>)
tells mom that you&#8217;ve finished the endnote.
</p>

<div class="box-tip">
<p class="tip">
<span class="note">Note:</span>
If an endnote runs to more than one paragraph, do <i>not</i> begin
the endnote with the
<a href="#pp">PP</a>
tag.  Use PP only to introduce subsequent paragraphs.
</p>
</div>

<div id="endnote-note" class="box-tip">
<p class="tip-top">
<span class="note">HYPER-IMPORTANT NOTE:</span>
If your
<a href="#endnote-marker-style">ENDNOTE_MARKER_STYLE</a>
is <kbd>NUMBER</kbd> or <kbd>SUPERSCRIPT</kbd> (mom&#8217;s
default is <kbd>NUMBER</kbd> unless you have
<a href="refer.html#endnote-refs">ENDNOTE_REFS</a>
enabled, in which case it&#8217;s <kbd>SUPERSCRIPT</kbd>), the final word on the
<a href="definitions.html#inputline">input line</a>
that comes immediately before <kbd>.ENDNOTE</kbd> must terminate
with a
<a href="typesetting.html#join"><kbd>\c</kbd></a>
inline escape.  See the
<a href="#endnote-example">endnote example</a>
above.
</p>

<p>
Additionally, in
<a href="definitions.html#filled">fill</a>
modes
(<a href="typesetting.html#justify">JUSTIFY</a>
or
<a href="typesetting.html#quad">QUAD</a>,
the line after <kbd>.ENDNOTE&nbsp;OFF</kbd> should be
entered as if there were no interruption in the input text, ie
the line should begin with a literal space or punctuation mark (see
explanation and examples for footnotes, which apply equally to
endnotes,
<a href="#fn-and-punct">here</a>).
</p>

<p class="tip-bottom">
If your ENDNOTE_MARKER_STYLE is LINE, do not use the <kbd>\c</kbd>
escape, and enter the line after <kbd>.ENDNOTE OFF</kbd> normally,
ie at your text editor&#8217;s left margin.
</p>
</div>

<div class="macro-id-overline">
<h3 id="endnotes" class="macro-id">ENDNOTES</h3>
</div>

<div class="box-macro-args">
Macro: <b>ENDNOTES</b>
</div>

<p>
Unlike footnotes, which mom automatically outputs at the bottom
of pages, endnotes must be explicitly output by you, the
user. ENDNOTES, by itself (ie without any argument), is the macro
to do this.
</p>

<p>
Typically, you&#8217;ll use ENDNOTES at the end of a document.  If
it&#8217;s a single (ie not collated) document, mom will print
the endnotes pertaining to it.  If it&#8217;s a collated document,
mom will print all the endnotes contained within all sections of
the document (typically chapters), appropriately identified and
numbered.
</p>

<p>
Should you wish to output the endnotes for each section of a
collated document at the ends of the sections (instead of at the
very end of the document), simply invoke <kbd>.ENDNOTES</kbd>
immediately prior to
<a href="rectoverso.html#collate">COLLATE</a>.
Mom will print the endnotes, identified and numbered appropriately,
on a separate page prior to starting the next section of the
document.  Each subsequent invocation of <kbd>.ENDNOTES</kbd>
outputs only those endnotes that mom collected after the previous
invocation.
</p>

<div class="defaults-container" style="background-color: #ded4bd; border: none;">
<h3 id="endnote-control" class="docs defaults">ENDNOTES control macros and defaults</h3>

<div class="box-important" style="width: 700px; margin: auto; background-color: #ded4bd;">
<p class="tip-top" style="color: #000056;">
<span class="important">Important:</span>
Endnotes control macros must always be invoked prior to the first
instance of
<a href="#endnote"><kbd>.ENDNOTE</kbd></a>.
</p>

<p style="color: #000056; margin-top: -.5em;">
When you embed endnotes in the body of a document, mom collects
<i>and processes</i> them for later outputting (when you invoke
<a href="#endnotes"><kbd>.ENDNOTES</kbd></a>).
By the time you do invoke <kbd
style="color: #000056;">.ENDNOTES</kbd>, it&#8217;s much too late to
change your mind about how you want them to look.
</p>

<p class="tip-bottom" style="color: #000056; margin-top: -.5em;">
My advice?  If you&#8217;re planning to change the default
appearance of endnotes pages, set them up prior to
<a href="docprocessing.html#start">START</a>.
</p>
</div>

<ol style="margin-top: .5em; padding-bottom: .5em;">
  <li><a href="#endnotes-general"><b>General endnotes style control</b></a>
  <ul style="margin-left: -.5em;">
    <li><a href="#endnote-style">Base family/font/quad</a></li>
    <li><a href="#endnote-pt-size">Base point size</a></li>
    <li><a href="#endnote-lead">Leading</a></li>
    <li><a href="#endnote-spacing">Spacing between endnotes</a></li>
    <li><a href="#singlespace-endnotes">Singlespace endnotes (TYPEWRITE only)</a></li>
    <li><a href="#endnote-para-indent">Paragraph indenting</a></li>
    <li><a href="#endnote-para-space">Inter-paragraph spacing</a></li>
    <li><a href="#endnotes-no-columns">Turning off column mode during endnotes output</a></li>
  </ul></li>
  <li><a href="#endnotes-pagination"><b>Pagination of endnotes</b></a>
  <ul style="margin-left: -.5em;">
    <li><a href="#endnotes-pagenum-style">Page numbering style</a></li>
    <li><a href="#endnotes-first-pagenumber">Setting the first page number of endnotes</a></li>
    <li><a href="#endnotes-no-first-pagenum">Omitting a page number on the first page of endnotes</a></li>
    <li><a href="#suspend-pagination">Suspending pagination during endnotes output</a></li>
  </ul></li>
  <li><a href="#endnotes-header-control"><b>Header/footer control</b></a>
  <ul style="margin-left: -.5em;">
    <li><a href="#endnotes-modify-hdrftr">Modifying what goes in the endnotes header/footer</a></li>
    <li><a href="#endnotes-hdrftr-center">Header/footer centre string when doctype is CHAPTER</a></li>
    <li><a href="#endnotes-allows-headers">Allow headers on endnotes pages</a></li>
  </ul></li>
  <li><a href="#endnotes-header"><b>Endnotes header (first-page title) control</b></a>
  <ul style="margin-left: -.5em;">
    <li><a href="#endnotes-header-string">Header string</a></li>
    <li><a href="#endnotes-header-string-control">Header string control macros and defaults</a></li>
    <li><a href="#endnotes-header-placement">Header string placement</a></li>
    <li><a href="#endnotes-header-underscore">Header string underscoring</a></li>
    <li><a href="#endnotes-header-caps">Header string capitalization</a></li>
  </ul></li>
  <li><a href="#endnotes-doc-title"><b>Endnotes document-identification string control</b></a>
  <ul style="margin-left: -.5em;">
    <li><a href="#endnote-title">Document-identification string(s)</a></li>
    <li><a href="#endnote-title-control">Document-identification string control macros and defaults</a></li>
  </ul></li>
  <li><a href="#endnotes-numbering"><b>Endnotes referencing style</b></a>
  <ul style="margin-left: -.5em;">
    <li><a href="#endnote-marker-style">Endnote marker style</a> &ndash; by numbers in the text, or by line number
    <ul style="margin-left: -.5em;">
      <li><a href="#endnote-linenumber-gap">Spacing between line-numbered endnotes and the endnote text</a></li>
      <li><a href="#endnote-linenumber-brackets">Brackets around endnote line numbers</a></li>
      <li><a href="#endnote-linenumber-separator">Separator after endnote line numbers instead of brackets</a></li>
    </ul></li>
    <li><a href="#endnote-number-control">Endnote numbering control macros and defaults</a></li>
    <li><a href="#endnote-number-alignment">Endnote numbering alignment</a></li>
  </ul></li>
</ol>
</div>

<h4 id="endnotes-general" class="docs" style="margin-top: -1.5em; margin-bottom: .5em;">1. General endnotes page style control</h4>

<h5 id="endnote-style" class="docs" style="margin-top: 0; margin-bottom: .5em; margin-left: .5em;">&bull;&nbsp;Base family/font/quad</h5>

*Note: ENDNOTE_QUAD must be set to either L (LEFT) or J (JUSTIFIED);
 R (RIGHT) and C (CENTER) will not work.
</span>
</div>

<h5 id="endnote-pt-size" class="docs" style="margin-top: -1.5em; margin-bottom: .5em; margin-left: .5em;">&bull;&nbsp;Base point size</h5>

<div class="box-macro-args">
Macro: <b>ENDNOTE_PT_SIZE</b> <kbd class="macro-args">&lt;base type size of endnotes&gt;</kbd>
</div>

<p>
Unlike most other control macros that deal with size of document
elements, ENDNOTE_PT_SIZE takes as its argument an absolute value,
relative to nothing.  Therefore, the argument represents the size of
endnote type in
<a href="definitions.html#picaspoints">points</a>,
unless you append an alternative
<a href="definitions.html#unitofmeasure">unit of measure</a>.
For example,
<br/>
<span class="pre-in-pp">
  .ENDNOTE_PT_SIZE 12
</span>
sets the base point size of type on the endnotes page to 12
points, whereas
<br/>
<span class="pre-in-pp">
  .ENDNOTE_PT_SIZE .6i
</span>
sets the base point size of type on the endnotes page to 1/6 of an
inch.
</p>

<p>
The type size set with ENDNOTE_PT_SIZE is the size of type used for
the text of the endnotes, and forms the basis from which the point
size of other endnote page elements is calculated.
</p>

<p>
The default for
<a href="docprocessing.html#printstyle">PRINTSTYLE <kbd>TYPESET</kbd></a>
is 12.5 points (the same default size used in the body of the
document).
</p>

<h5 id="endnote-lead" class="docs" style="margin-top: -.5em; margin-bottom: .5em; margin-left: .5em;">&bull;&nbsp;Leading</h5>

<div class="box-macro-args">
Macro: <b>ENDNOTE_LEAD</b> <kbd class="macro-args">&lt;base leading of endnotes&gt; [ ADJUST ] </kbd>
</div>

<p class="requires">
&bull;&nbsp;Does not require a <a href="definitions.html#unitofmeasure">unit of measure</a>; points is assumed
</p>

<p>
Unlike most other control macros that deal with leading of document
elements, ENDNOTE_LEAD takes as its argument an absolute value,
relative to nothing.  Therefore, the argument represents the
<a href="definitions.html#leading">leading</a>
of endnotes in
<a href="definitions.html#picaspoints">points</a>
unless you append an alternative
<a href="definitions.html#unitofmeasure">unit of measure</a>.
For example,
<br/>
<span class="pre-in-pp">
  .ENDNOTE_LEAD 14
</span>
sets the base leading of type on the endnotes page to 14
points, whereas
<br/>
<span class="pre-in-pp">
  .ENDNOTE_LEAD .5i
</span>
sets the base leading of type on the endnotes page to 1/2 inch.
</p>

<p>
If you want the leading of endnotes adjusted to fill the page, pass
ENDNOTE_LEAD the optional argument
<kbd>ADJUST</kbd>.  (See
<a href="docprocessing.html#doc-lead-adjust">DOC_LEAD_ADJUST</a>
for an explanation of leading adjustment.)
</p>

<p>
The default for
<a href="docprocessing.html#printstyle">PRINTSTYLE <kbd>TYPESET</kbd></a>
is the prevailing document leading (16 by default), adjusted.
</p>

<div class="box-tip">
<p class="tip">
<span class="note">Note:</span>
Even if you give mom a <kbd>.DOC_LEAD_ADJUST&nbsp;OFF</kbd> command, she
will still, by default, adjust endnote leading.  You <i>must</i>
enter <kbd>.ENDNOTE_LEAD&nbsp;&lt;lead&gt;</kbd> with no
<kbd>ADJUST</kbd> argument to disable this default behaviour.
</p>
</div>

<h5 id="endnote-spacing" class="docs" style="margin-top: -.5em; margin-bottom: .5em; margin-left: .5em;">&bull;&nbsp;Spacing between endnotes</h5>

<div class="box-macro-args">
Macro: <b>ENDNOTE_SPACING</b> <kbd class="macro-args">&lt;space to insert between endnotes&gt;</kbd>
</div>
<p class="requires">
&bull;&nbsp;Requires a <a href="definitions.html#unitofmeasure">unit of measure</a>
</p>

<p>
If you'd like some whitespace between endnotes, just invoke
ENDNOTE_SPACING with the amount of space you want, e.g.,
<br/>
<span class="pre-in-pp">
  .ENDNOTE_SPACING 6p
</span>
which inserts 6 points of lead between endnotes.  Be aware, though,
that inserting space between endnotes means that the bottoms of
endnotes pages will most likely not align.
</p>

<p>
Mom&#8217;s default is not to insert any whitespace between endnotes.
</p>

<h5 id="singlespace-endnotes" class="docs" style="margin-top: 0; margin-bottom: .5em; margin-left: .5em;">&bull;&nbsp;Singlespace endnotes (TYPEWRITE only)</h5>

<div class="box-macro-args">
Macro: <b>SINGLESPACE_ENDNOTES</b> <kbd class="macro-args">&lt;toggle&gt;</kbd>
</div>

<p>
If your 
<a href="docprocessing.html#printstyle">PRINTSTYLE</a>
is <kbd>TYPEWRITE</kbd> and you use TYPEWRITE&#8217;s default
double-spacing, endnotes are double-spaced.  If your document is
single-spaced, endnotes are single-spaced.
</p>

<p>
If, for some reason, you&#8217;d prefer that endnotes be
single-spaced in an otherwise double-spaced document (including
double-spaced
<a href="rectoverso.html#collate">collated</a>
documents), invoke
<br/>
<span class="pre-in-pp">
  .SINGLESPACE_ENDNOTES
</span>
with no argument.  And if, god help you, you want to change endnote
single-spacing back to double-spacing for different spacing of
endnotes output at the ends of separate documents in a collated
document, invoke <kbd>.SINGLESPACE_ENDNOTES</kbd> with any argument
(<kbd>OFF, QUIT, Q, X</kbd>...).
</p>

<h5 id="endnote-para-indent" class="docs" style="margin-top: 0; margin-bottom: .5em; margin-left: .5em;">&bull;&nbsp;Paragraph indenting</h5>

<div class="box-macro-args">
Macro: <b>ENDNOTE_PARA_INDENT</b> <kbd class="macro-args">&lt;amount to indent first line of paragraphs in endnotes&gt;</kbd>
</div>

<p class="requires">
&bull;&nbsp;Requires a <a href="definitions.html#unitofmeasure">unit of measure</a>
</p>

<p>
ENDNOTE_PARA_INDENT works exactly the same way as
<a href="#para-indent">PARA_INDENT</a>,
except that the indent given is the amount by which to indent the
first lines of endnote paragraphs, not document body paragraphs.
</p>

<p>
The default is 1.5
<a href="definitions.html#em">ems</a>
for
<a href="docprocessing.html#printstyle">PRINTSTYLE <kbd>TYPESET</kbd></a>;
1/2 inch for
<a href="docprocessing.html#printstyle">PRINTSTYLE <kbd>TYPEWRITE</kbd></a>.
</p>

<div class="box-tip">
<p class="tip">
<span class="note">Note:</span>
The first line of the first paragraph of endnotes (the one attached
immediately to the identifying endnote number) is never indented.
Only subsequent paragraphs are affected by ENDNOTE_PARA_INDENT.
</p>
</div>

<h5 id="endnote-para-space" class="docs" style="margin-top: -.5em; margin-bottom: .5em; margin-left: .5em;">&bull;&nbsp;Inter-paragraph spacing</h5>

<div class="box-macro-args">
Macro: <b>ENDNOTE_PARA_SPACE</b> <kbd class="macro-args">&lt;toggle&gt;</kbd>
</div>

<p>
ENDNOTE_PARA_SPACE works exactly the same way as
<a href="#pp-space">PARA_SPACE</a>,
except that it inserts a blank line between endnote paragraphs, not
document body paragraphs.
</p>

<p>
The default is not to insert a blank line between paragraphs in
endnotes.
</p>

<h5 id="endnotes-no-columns" class="docs" style="margin-top: 0; margin-bottom: .5em; margin-left: .5em;">&bull;&nbsp;Turning off column mode during endnotes output</h5>

<div class="box-macro-args">
Macro: <b>ENDNOTES_NO_COLUMNS</b> <kbd class="macro-args">&lt;toggle&gt;</kbd>
</div>

<p>
By default, if your document is set in
<a href="docprocessing.html#columns">columns</a>,
mom sets the endnotes in columns, too.  However, if your document
is set in columns and you&#8217;d like the endnotes not to be,
just invoke <kbd>.ENDNOTES_NO_COLUMNS</kbd> with no argument.
The endnotes pages will be set to the full page measure of your
document.
</p>

<p>
If you output endnotes at the end of each document in a
<a href="rectoverso.html#collate">collated</a>
document set in columns, column mode will automatically be
reinstated for each document, even with ENDNOTES_NO_COLUMNS turned
on.  In such circumstances, you must re-enable ENDNOTES_NO_COLUMNS
for each separate collated document.
</p>

<h4 id="endnotes-pagination" class="docs" style="margin-bottom: .5em;">2. Pagination of endnotes</h4>

<h5 id="endnotes-pagenum-style" class="docs" style="margin-top: 0; margin-bottom: .5em; margin-left: .5em;">&bull;&nbsp;Page numbering style</h5>

<div class="box-macro-args">
Macro: <b>ENDNOTES_PAGENUM_STYLE</b> <kbd class="macro-args">DIGIT | ROMAN | roman | ALPHA | alpha</kbd>
</div>

<p>
Use this macro to set the page numbering style of endnotes pages.
The arguments are identical to those for
<a href="headfootpage.html#pagenum-style">PAGENUM_STYLE</a>.
The default is <kbd>digit</kbd>.  You may want to change it to, say,
<kbd>alpha</kbd>, which you would do with
<br/>
<span class="pre-in-pp">
  .ENDNOTES_PAGENUM_STYLE alpha
</span>
</p>

<h5 id="endnotes-first-pagenumber" class="docs" style="margin-top: -.5em; margin-bottom: .5em; margin-left: .5em;">&bull;&nbsp;Setting the first page number of endnotes</h5>

<div class="box-macro-args">
Macro: <b>ENDNOTES_FIRST_PAGENUMBER</b> <kbd class="macro-args">&lt;page # that appears on page 1 of endnotes&gt;</kbd>
</div>

<p>
Use this macro with caution.  If all endnotes for several
<a href="rectoverso.html#collate">collated</a>
documents are to be output at once, ie not at the end of each
separate doc, ENDNOTES_FIRST_PAGENUMBER tells mom what page number
to put on the first page of the endnotes.
</p>

<p>
However, if you set ENDNOTES_FIRST_PAGENUMBER in collated documents
in which the endnotes are output after each section (chapter,
article, etc), you have to reset every section&#8217;s first page
number after
<a href="rectoverso.html#collate">COLLATE</a>
and before
<a href="docprocessing.html#start">START</a>
with
<a href="headfootpage.html#pagenumber">PAGENUMBER</a>.
</p>

<h5 id="endnotes-no-first-pagenum" class="docs" style="margin-top: -.25em; margin-bottom: .5em; margin-left: .5em;">&bull;&nbsp;Omitting a page number on the first page of endnotes</h5>

<div class="box-macro-args">
Macro: <b>ENDNOTES_NO_FIRST_PAGENUM</b> <kbd class="macro-args">&lt;toggle&gt;</kbd>
</div>

<p>
This macro is for use only if
<a href="headfootpage.html#footers">FOOTERS</a>
are on.  It tells
<a href="#endnotes">ENDNOTES</a>
not to print a page number on the first endnotes page.  Mom&#8217;s
default is to print the page number.
</p>

<h5 id="suspend-pagination" class="docs" style="margin-top: -.5em; margin-bottom: .5em; margin-left: .5em;">&bull;&nbsp;Suspending pagination during endnotes output</h5>

<div class="box-macro-args" style="margin-bottom: 1em;">
Macro: <b>SUSPEND_PAGINATION</b>
</div>

<div class="box-macro-args">
Macro: <b>RESTORE_PAGINATION</b>
</div>

<p>
SUSPEND_PAGINATION doesn&#8217;t take an argument.  Invoked
immediately prior to
<a href="#endnotes">ENDNOTES</a>,
it turns off endnotes pages pagination.  Mom continues, however to
increment page numbers silently.
</p>

<p>
To restore normal document pagination after endnotes, invoke
<kbd>.RESTORE_PAGINATION</kbd> (again, with no argument) immediately
after <kbd>.ENDNOTES</kbd>.
</p>

<h4 id="endnotes-header-control" class="docs" style="margin-bottom: .5em;">3. Header/footer control</h4>

<h5 id="endnotes-modify-hdrftr" class="docs" style="margin-top: 0; margin-bottom: -.75em; margin-left: .5em;">&bull;&nbsp;Modifying what goes in the endnotes header/footer</h5>

<p>
If you wish to modify what appears in the header/footer that appears
on endnotes page(s), make the changes before you invoke
<a href="#endnotes"><kbd>.ENDNOTES</kbd></a>,
not afterwards.
</p>

<p>
Except in the case of
<a href="docprocessing.html#doctype">DOCTYPE <kbd>CHAPTER</kbd></a>,
mom prints the same header or footer used throughout the document
on the endnotes page(s).  Chapters get treated differently in that,
by default, mom does not print the header/footer centre string
(normally the chapter number or chapter title.)  In most cases, this
is what you want.  However, should you not want mom to remove
the centre string from the endnotes page(s) headers/footers, invoke
<kbd><a href="#endnotes-hdrftr-center">.ENDNOTES_HEADER_CENTER</a></kbd>
with no argument. 
</p>

<p>
An important change you may want to make is to put the word
&#8220;Endnotes&#8221; in the header/footer centre position.  To do
so, invoke
<br/>
<span class="pre-in-pp" style="margin-bottom: -1em;">
  .HEADER_CENTER "Endnotes"
</span>
or
<span class="pre-in-pp" style="margin-top: -.5em;">
  .FOOTER_CENTER "Endnotes"
</span>
prior to invoking <kbd>.ENDNOTES</kbd>.
</p>

<div class="box-tip">
<p class="tip">
<span class="note">Note:</span>
If your
<a href="docprocessing.html#doctype">DOCTYPE</a>
is <kbd>CHAPTER</kbd>, you must also invoke
<a href="#endnotes-hdrftr-center">ENDNOTES_HEADER_CENTER</a>
for the ENDNOTES_HEADER_CENTER to appear.
</p>
</div>

<h5 id="endnotes-hdrftr-center" class="docs" style="margin-top: 0; margin-bottom: .5em; margin-left: .5em;">&bull;&nbsp;Header/footer centre string when doctype is CHAPTER</h5>

<div class="box-macro-args">
Macro: <b>ENDNOTES_HEADER_CENTER</b> <kbd class="macro-args">toggle</kbd>
</div>

<p>
If your
<a href="docprocessing.html#doctype">DOCTYPE</a>
is <kbd>CHAPTER</kbd> and you want mom to include a centre
string in the headers/footers that appear on endnotes
pages, invoke <kbd>.ENDNOTES_HEADER_CENTER</kbd> (or
<kbd>.ENDNOTES_FOOTER_CENTER</kbd>) with no argument.  Mom&#8217;s
default is not to print the centre string.
</p>

<p>
If, for some reason, having enabled the header/footer centre string
on endnotes pages, you wish to disable it, invoke the same macro
with any argument (<kbd>OFF, QUIT, Q, X</kbd>...).
</p>

<h5 id="endnotes-allows-headers" class="docs" style="margin-top: -.5em; margin-bottom: .5em; margin-left: .5em;">&bull;&nbsp;Allow headers on endnotes pages</h5>

<div class="box-macro-args">
Macro: <b>ENDNOTES_ALLOWS_HEADERS</b> <kbd class="macro-args">&lt;none&gt; | ALL</kbd>
</div>

<p>
By default, if HEADERS are on, mom prints page headers on all
endnotes pages except the first.  If you don&#8217;t want her to
print headers on endnotes pages, do
<br/>
<span class="pre-in-pp">
  .ENDNOTES_ALLOWS_HEADERS OFF
</span>
If you want headers on every page including the first, do
<br/>
<span class="pre-in-pp">
  .ENDNOTES_ALLOWS_HEADERS ALL
</span>
</p>

<div class="box-tip">
<p class="tip">
<span class="note">Note:</span>
If FOOTERS are on, mom prints footers on every endnotes page.
This is a style convention.  In mom, there is no such beast as
ENDNOTES_ALLOWS_FOOTERS OFF.
</p>
</div>

<h4 id="endnotes-header" class="docs">4. Endnotes header (first-page title) control</h4>

<h5 id="endnotes-header-string" class="docs" style="margin-top: 1em; margin-bottom: .5em; margin-left: .5em;">&bull;&nbsp;Header (first-page title) string</h5>

<div class="box-macro-args">
Macro: <b>ENDNOTES_HEADER_STRING</b> <kbd class="macro-args">&quot;&lt;title to print at the top of endnotes&gt;&quot;</kbd>
</div>

<p class="alias" style="margin-bottom: 0;">
<i>Alias:</i> <b>ENDNOTE_STRING</b> (for compatibility with older documents)
</p>

<p>
By default, mom prints the word &#8220;ENDNOTES&#8221; as a head
at the top of the first page of endnotes.  If you want her to
print something else, invoke <kbd>.ENDNOTES_HEADER_STRING</kbd>
with the endnotes-page head you want, surrounded by double-quotes.
If you don&#8217;t want a head at the top of the first
endnotes-page, invoke <kbd>.ENDNOTES_HEADER_STRING</kbd>
with a blank argument (either two double-quotes side by
side&mdash;<kbd>&quot;&quot;</kbd>&mdash;or no argument at all).
</p>

<h5 id="endnotes-header-string-control" class="docs" style="margin-top: -.5em; margin-bottom: .5em; margin-left: .5em;">&bull;&nbsp;Header (first-page title) control macros and defaults</h5>

<p style="margin-top: .5em; margin-bottom: 0; margin-left: .5em">
Please note that &#8220;_HEADER_&#8221;, here, refers to the title
that appears at the top of the first endnotes page, not to the page
headers of subsequent endnotes pages.
<span class="pre defaults">
.ENDNOTES_HEADER_FAMILY  default = prevailing document family
.ENDNOTES_HEADER_FONT    default = bold
.ENDNOTES_HEADER_SIZE*   default = +1
.ENDNOTES_HEADER_QUAD    default = centred
.ENDNOTES_HEADER_COLOR   default = black

*Relative to the size of the endnotes text (set with ENDNOTE_PT_SIZE)
</span>
</p>
</div>

<p style="margin-top: -2em">
<b>Note:</b> <i>For compatibility with older documents, these macros are aliased
as</i> <kbd>.ENDNOTE_STRING_&lt;SPEC&gt;</kbd>, e.g. <kbd>.ENDNOTE_STRING_FAMILY</kbd>.
</p>

<h5 id="endnotes-header-placement" class="docs" style="margin-top: -.25em; margin-bottom: .5em; margin-left: .5em;">&bull;&nbsp;Header (first-page title) placement</h5>

<div class="box-macro-args">
Macro: <b>ENDNOTES_HEADER_V_POS</b> <kbd class="macro-args">&lt;distance from top of page&gt;</kbd>
</div>

<p class="requires">
&bull;&nbsp;Argument requires a <a href="definitions.html#unitofmeasure">unit of measusure</a>
</p>

<p class="alias" style="margin-top: -1em; margin-bottom: 0;">
<i>Alias:</i> <b>ENDNOTE_STRING_ADVANCE</b> (for compatibility with older documents)
</p>

<p>
By default, mom places the title (the docheader, as it were) of
endnotes pages (typically "ENDNOTES") on the same
<a href="definitions.html#baseline">baseline</a>
that is used for the start of
<a href="definitions.html#running">running text</a>.
If you&#8217;d prefer another location, higher or lower on the page
(thereby also raising or lowering the starting position of the
endnotes themselves), invoke <kbd>.ENDNOTES_HEADER_V_POS</kbd> with
an argument stating the distance from the top edge of the page at
which you&#8217;d like the title placed.
</p>

<p>
The argument requires a unit of measure, so if you&#8217;d like the title
to appear 1-1/2 inches from the top edge of the page, you&#8217;d tell
mom about it like this:
<br/>
<span class="pre-in-pp">
  .ENDNOTES_HEADER_V_POS 1.5i
</span>
</p>

<h5 id="endnotes-header-underscore" class="docs" style="margin-top: -1em; margin-bottom: .5em; margin-left: .5em;">&bull;&nbsp;Header (first-page title) underscoring</h5>

<div class="box-macro-args">
Macro: <b>ENDNOTES_HEADER_UNDERSCORE</b> <kbd class="macro-args">[DOUBLE] [&lt;underscore weight&gt; [&lt;underscore gap&gt; [&lt;distance between double rules]]] | &lt;none&gt; | &lt;anything&gt;</kbd>
</div>

<p class="alias" style="margin-bottom: 0;">
<i>Alias:</i> <b>ENDNOTES_HEADER_UNDERLINE</b>.
<i>(For compatibility with older documents, also
aliased as</i> <b>ENDNOTE_STRING_UNDERSCORE</b> <i>and</i>
<b>ENDNOTE_STRING_UNDERLINE</b>.)
</p>

<p class="requires">
&bull;&nbsp;The argument
<span style="font-style: normal"><kbd>&lt;underscore weight&gt;</kbd></span>
must not have the
<a href="definitions.html#unitofmeasure">unit of measure</a>,
<span style="font-style: normal;"><kbd>p</kbd></span>,
appended to it; all other arguments require a unit of measure
</p>

<p>
Invoked without an argument, <kbd>.ENDNOTES_HEADER_UNDERSCORE</kbd>
will place a single rule underneath the endnotes page title.  Invoked
with the argument, <kbd>DOUBLE</kbd>, ENDNOTES_HEADER_UNDERSCORE will
double-underscore the title.  Invoked with any other non-numeric
argument, (e.g., <kbd>OFF, NO, X</kbd>, etc.) the macro disables
underscoring of the title.
</p>

<p>
In addition, you can use ENDNOTES_HEADER_UNDERSCORE to control the
weight of the underscore rule(s), the gap between the title and the
underscore, and, in the case of double-underscores, the distance
between the two rules.
</p>

<p>
Some examples:
<br/>
<span class="pre-in-pp">
  .ENDNOTES_HEADER_UNDERSCORE 1
      - turn underscoring on; set the rule weight to 1 point

.ENDNOTES_HEADER_UNDERSCORE 1 3p
      - turn underscoring on; set the rule weight to 1 point; set
        the gap between the title and the underscore to 3 points
  
  .ENDNOTES_HEADER_UNDERSCORE DOUBLE .75 3p
      - turn double-underscoring on; set the rule weight to 3/4 of
        a point; set the gap between the title and the upper
        underscore to 3 points; leave the gap between the upper
        and the lower underscore at the default
  
  .ENDNOTES_HEADER_UNDERSCORE DOUBLE 1.5 1.5p 1.5p
      - turn double-underscoring on; set the rule weight to 1-1/2
        points; set the gap between the title and the upper
        underscore to 1-1/2 points; set the gap between the upper
        and the lower underscore to 1-1/2 points
</span>
Note, from the above, that in all instances, underscoring (single
or double) is enabled whenever ENDNOTES_HEADER_UNDERSCORE is used in
this way.
</p>

<p>
By default, mom double-underscores the title if your
<a href="docprocessing.html#printstyle">PRINTSTYLE</a>
is <kbd>TYPEWRITE</kbd>.
</p>

<h5 id="endnotes-header-caps" class="docs" style="margin-top: -.5em; margin-bottom: .5em; margin-left: .5em;">&bull;&nbsp;Header (first-page title) capitalization</h5>

<div class="box-macro-args">
Macro: <b>ENDNOTES_HEADER_CAPS</b> <kbd class="macro-args">toggle</kbd>
</div>

<p class="alias" style="margin-bottom: 0;">
<i>Alias:</i> <b>ENDNOTE_STRING_CAPS</b> (for compatibility with older documents)
</p>

<p>
Invoked by itself, <kbd>.ENDNOTES_HEADER_CAPS</kbd> will
automatically capitalize the endnotes-page title.  Invoked with any
other argument, the macro disables automatic capitalization of the
title.
</p>

<p>
If you&#8217;re generating a table of contents, you may want the
endnotes pages title to be in caps, but the toc entry in caps/lower
case.  If the argument to
<kbd><a href="#endnotes-header-string">ENDNOTES_HEADER_STRING</a></kbd>
is in caps/lower case and ENDNOTES_HEADER_CAPS is on, this is exactly
what will happen.
</p>

<p>
Mom&#8217;s default is to capitalize the endnotes pages title string.
</p>

<h4 id="endnotes-doc-title" class="docs" style="margin-top: -.25em;">5. Endnotes document-identification title control</h4>

<h5 id="endnote-title" class="docs" style="margin-top: 1em; margin-bottom: .5em; margin-left: .5em;">&bull;&nbsp;Document-identification title string(s)</h5>

<div class="box-macro-args">
Macro: <b>ENDNOTE_TITLE</b> <kbd class="macro-args">&quot;&lt;title to identify a document in endnotes&gt;&quot;</kbd>
</div>

<p>
By default, mom identifies the document(s) to which endnotes belong
by the document title(s) given to the
<a href="docprocessing.html#title">TITLE</a>
macro.  If you&#8217;d like her to identify the document(s) another
way, simply invoke <kbd>.ENDNOTE_TITLE</kbd> prior to
<a href="docprocessing.html#start">START</a>
with the identifying title you want, surrounded by double-quotes.
</p>

<p>
If you don&#8217;t want any identifying title, invoke
<kbd>.ENDNOTE_TITLE</kbd> with a blank argument, either two
double-quotes side by side (<kbd>&quot;&quot;</kbd>) or no argument
at all.  This is particularly useful if you have a single (ie
non-collated) document and find having the document&#8217;s title
included in the endnotes redundant.
</p>

<h5 id="endnote-title-control" class="docs" style="margin-top: .75em; margin-bottom: .5em; margin-left: .5em;">&bull;&nbsp;Document-identification string control macros and defaults</h5>

<div class="defaults-container" style="padding-bottom: 8px;">
<p class="defaults" style="padding-top: 6px;">
See
<a href="#control-macro-args">Arguments to the control macros</a>.
<br/>
The following ENDNOTE_TITLE_STYLE control macros may also be
<a href="#grouping">grouped</a>
using ENDNOTE_TITLE_STYLE_STYLE.
</p>
<span class="pre defaults">
.ENDNOTE_TITLE_FAMILY default = prevailing document family; default is Times Roman
.ENDNOTE_TITLE_FONT   default = bold
.ENDNOTE_TITLE_SIZE*  default = 0
.ENDNOTE_TITLE_COLOR  default = black
.ENDNOTE_TITLE_QUAD   default = left
.ENDNOTE_TITLE_CAPS
.ENDNOTE_TITLE_SMALLCAPS
.ENDNOTE_TITLE_UNDERSCORE default = single underscore

*Relative to the size of the endnotes text (set with ENDNOTE_PT_SIZE)
</span>
</div>

<h4 id="endnotes-numbering" class="docs" style="margin-top: -.25em;">6. Endnotes referencing style</h4>

<h5 id="endnote-marker-style" class="docs" style="margin-top: 1em; margin-bottom: .5em; margin-left: .5em;">&bull;&nbsp;Endnote marker style</h5>

<div class="box-macro-args">
Macro: <b>ENDNOTE_MARKER_STYLE</b> <kbd class="macro-args"><a href="#line">LINE</a> | <a href="#number">NUMBER</a> | <a href="#superscript">SUPERSCRIPT</a></kbd>
</div>

<p id="line">
<span style="display: block; margin-bottom: .25em;">&bull;&nbsp;<i>Argument:</i> <kbd>LINE</kbd></span>
By default, mom places superscript numbers in
<a href="definitions.html#running">running text</a>
to identify endnotes.  However, if you have
<a href="#number-lines">linenumbering</a>
turned on, you may instruct mom not to put superscript numbers in
the running text, but rather to reference endnotes by line number.
The command to do this is
<br/>
<span class="pre-in-pp">
  .ENDNOTE_MARKER_STYLE LINE
</span>
With ENDNOTE_MARKER_STYLE <kbd>LINE</kbd>, mom will identify
endnotes either by single line numbers or by line ranges.  If
what you want is a single line number, you need only invoke
<kbd>.ENDNOTE</kbd> at the appropriate place in running
text <i>without the terminating</i> <kbd>\c</kbd>.  Input lines
after the endnote has been terminated (e.g., with <kbd>.ENDNOTE
OFF</kbd>) must begin at the left margin.
</p>

<p>
(Should you wish to revert to mom&#8217;s default behaviour of
placing a superscript number in the text to identify an endnote,
you can invoke <kbd>.ENDNOTE_MARKER_STYLE</kbd> with the argument,
<kbd>NUMBER</kbd>.  It is not advisable to switch marker styles
within a single document, for aesthetic reasons, but there is
nothing to prevent you from doing so.)
</p>

<p id="en-mark">
If you want a range of line numbers (e.g.,&nbsp;[5-11]&nbsp;),
insert, directly into the first line of the range you want, the
<a href="definitions.html#inlines">inline escape</a>,
<kbd>\*[EN-MARK]</kbd>.  For the terminating line number of the
range, you need only invoke <kbd>.ENDNOTE</kbd> (again, without the
terminating <kbd>\c</kbd>).  Mom is smart enough to figure out that
where <kbd>.ENDNOTE</kbd> is invoked represents the terminating line
number.
</p>

<div id="endnote-linenumbers-note" class="box-tip">
<p class="tip-top">
<span class="note">Note:</span>
By default, mom reserves a fixed amount of space, equal to 8
placeholders, for the linenumbers of linenumbered endnotes.  Within
that space, the numbers are flush right with each other.  The
reserved space is enough to print a range of linenumbers of the form
<kbd>[nnnn-nnnn]</kbd>, but may be more than you need.
</p>

<p>
The goal with linenumbered endnotes is to ensure that the longest
linenumber or range of lines is flush with the left margin of the
page.  Adjusting the reserved space is done with the macro
<a href="docelement.html#endnote-numbers-align">ENDNOTE_NUMBERS_ALIGN</a>,
and the rules for getting it right are simple.
</p>

<p class="tip-bottom">
If your document runs to less than 100 lines, invoke
<br/>
<span class="pre-in-pp">
  .ENDNOTE_NUMBERS_ALIGN RIGHT 0
</span>
If your document has between 100 and 999 lines
<br/>
<span class="pre-in-pp">
  .ENDNOTE_NUMBERS_ALIGN RIGHT 1
</span>
If your document has between 1000 and 9999 lines
<br/>
<span class="pre-in-pp">
  .ENDNOTE_NUMBERS_ALIGN RIGHT 2
</span>
etc.
</p>
</div>

<p id="number" style="margin-top: -.5em;">
<span style="display: block; margin-bottom: .25em;">&bull;&nbsp;<i>Argument:</i> <kbd>NUMBER</kbd></span>
With the argument <kbd>NUMBER</kbd>, mom places superscript numbers
in running text, but identifies endnotes in the endnotes section
of your document with normal-sized, base-aligned numbers.
</p>

<p id="superscript" style="margin-top: -.5em;">
<span style="display: block; margin-bottom: .25em;">&bull;&nbsp;<i>Argument:</i> <kbd>SUPERSCRIPT</kbd></span>
With the argument <kbd>SUPERSCRIPT</kbd>, mom places superscript
numbers in running text, and identifies endnotes in the endnotes
section of your document with superscript numbers as well.  This is
mom&#8217;s default.
</p>

<div id="endnote-superscript-note" class="box-tip">
<p class="tip-top">
<span class="note">Note:</span>
By default, mom reserves a fixed amount of space, equal to 2
placeholders, for the superscript numbers identifying endnotes in
the endnotes section of your document.  Within that space, the
numbers are flush right with each other.
</p>

<p class="tip-bottom">
If you need less space (the total number of endnotes is less than 10) or
more (the total number of endnotes is greater than 99), use the
macro
<a href="docelement.html#endnote-numbers-align">ENDNOTE_NUMBERS_ALIGN</a>,
to set the desired amount of reserved space, e.g.,
<br/>
<span class="pre-in-pp">
  .ENDNOTE_NUMBERS_ALIGN RIGHT 1
</span>
or
<br/>
<span class="pre-in-pp">
  .ENDNOTE_NUMBERS_ALIGN RIGHT 3
</span>
</p>
</div>

<h5 id="endnote-linenumber-gap" class="docs" style="margin-bottom: .5em; margin-left: .5em;">&bull;&nbsp;Spacing between line-numbered endnotes and the endnote text</h5>

<div class="box-macro-args">
Macro: <b>ENDNOTE_LINENUMBER_GAP</b> <kbd class="macro-args">&lt;size of gap&gt;</kbd>
</div>

<p class="requires">
&bull;&nbsp;Requires a <a href="definitions.html#unitofmeasure">unit of measure</a>
</p>

<p>
When your
<a href="#endnote-marker-style">ENDNOTE_MARKER_STYLE</a>
is <kbd>LINE</kbd>, mom, by default, inserts a space equal to
1/2-<a href="definitions.html#em">en</a>
between the linenumber and the text of an endnote.  For aesthetic
reasons, you may want to change the size of the gap, which is done
with the macro ENDNOTE_LINENUMBER_GAP.
</p>

<p>
ENDNOTE_LINENUMBER_GAP takes as its single argument the size
of the gap.  The argument requires a
<a href="definitions.html#unitofmeasure">unit of measure</a>,
so, for example, to change the gap to 2
<a href="definitions.html#picaspoints">picas</a>,
you&#8217;d do
<br/>
<span class="pre-in-pp">
  .ENDNOTE_LINENUMBER_GAP 2P
</span>
</p>

<h5 id="endnote-linenumber-brackets" class="docs" style="margin-top: -.5em; margin-bottom: .5em; margin-left: .5em;">&bull;&nbsp;Brackets around endnote line numbers</h5>

<div class="box-macro-args">
Macro: <b>ENDNOTE_LINENUMBER_BRACKETS</b> <kbd class="macro-args">PARENS | SQUARE | BRACES | ( | [ | {</kbd>
</div>

<p>
By default, mom puts endnote line numbers inside square brackets.
The style of the brackets may be changed with the macro
ENDNOTE_LINENUMBER_BRACKETS, which takes one of three possible
arguments: <kbd>PARENS</kbd> (&#8220;round&#8221; brackets),
<kbd>SQUARE</kbd> (the default) or <kbd>BRACES</kbd> (curly braces).
If you prefer a shortform, the arguments, <kbd>(</kbd>, <kbd>[</kbd>
or <kbd>{</kbd> may be used instead.
</p>

<h5 id="endnote-linenumber-separator" class="docs" style="margin-top: -.5em; margin-bottom: .5em; margin-left: .5em;">&bull;&nbsp;Separator after endnote line numbers instead of brackets</h5>

<div class="box-macro-args">
Macro: <b>ENDNOTE_LINENUMBER_SEPARATOR</b> <kbd class="macro-args">&lt;character&gt;</kbd>
</div>

<p>
If you don&#8217;t want the numbers enclosed in brackets, you may tell
mom to use a separator instead.  A common
separator would be the colon, but it can be anything you like.
</p>

<p>
ENDNOTE_LINENUMBER_SEPARATOR takes as its single argument the
separator you want.  (If the argument contains spaces, don&#8217;t
forget to enclose the argument in double-quotes.)  The separator
can be composed of any valid groff character, or any combination of
characters.  For example, to get a colon separator after the line
number in line-numbered endnotes, you&#8217;d do
<br/>
<span class="pre-in-pp">
  .ENDNOTE_LINENUMBER_SEPARATOR :
</span>
</p>

<h5 id="endnote-number-control" class="docs" style="margin-top: -1em; margin-bottom: .5em; margin-left: .5em;">&bull;&nbsp;Endnote numbering style control</h5>

<div class="defaults-container" style="padding-bottom: 8px;">
<p class="defaults" style="padding-top: 6px;">
See
<a href="#control-macro-args">Arguments to the control macros</a>.
</p>

<p class="defaults">
Please note that the control macros for endnote numbering affect only
the numbers that appear on the endnotes pages themselves, not the
endnote numbers that appear in the body of a document.
</p>
<span class="pre defaults">
Numbered endnotes
.ENDNOTE_NUMBER_FAMILY default = prevailing document family; default Times Roman
.ENDNOTE_NUMBER_FONT   default = bold
.ENDNOTE_NUMBER_SIZE*  default = 0
Linenumbered endnotes
.ENDNOTE_LINENUMBER_FAMILY default = prevailing document family; default Times Roman
.ENDNOTE_LINENUMBER_FONT   default = bold
.ENDNOTE_LINENUMBER_SIZE*  default = 0

*Relative to the size of the endnotes text (set with ENDNOTE_PT_SIZE)
</span>
</div>

<h5 id="endnote-number-alignment" class="docs" style="margin-top: -1.25em; margin-bottom: -.5em; margin-left: .5em;">&bull;&nbsp;Endnote numbering alignment</h5>

<p style="margin-top: .75em;">
By default, when your
<a href="#endnote-marker-style">ENDNOTE_MARKER_STYLE</a>
is <kbd>NUMBER</kbd>, mom hangs the numbers on endnotes pages,
aligned right to two placeholders, producing this:
<br/>
<span id="endnote-numbering-alignment-example" class="pre-in-pp">
   9. Lorem ipsum dolor sit amet, consetetur sadipscing elitr,
      sed diam nonumy eirmod tempor invidunt ut labore et
      dolore magna aliquyam erat, sed diam voluptua.

10. Lorem ipsum dolor sit amet, consetetur sadipscing elitr,
      sed diam nonumy eirmod tempor invidunt ut labore et
      dolore magna aliquyam erat, sed diam voluptua.
</span>
If you wish to change either the alignment or the number of
placeholders, the macro to use is ENDNOTE_NUMBERS_ALIGN.
</p>

<div id="endnote-numbers-align" class="box-macro-args">
Macro: <b>ENDNOTE_NUMBERS_ALIGN</b> <kbd class="macro-args">LEFT | RIGHT &lt;number of placeholders&gt;</kbd>
</div>

<p>
ENDNOTE_NUMBERS_ALIGN determines how endnote numbers are aligned.  If you invoke
<br/>
<span class="pre-in-pp">
  .ENDNOTE_NUMBERS_ALIGN RIGHT 2
</span>
the periods (dots) after the numbers will align, like this
<span class="pre-in-pp">
   9. Lorem ipsum dolor sit amet, consetetur sadipscing elitr,
      sed diam nonumy eirmod tempor invidunt ut labore et
      dolore magna aliquyam erat, sed diam voluptua.

10. Lorem ipsum dolor sit amet, consetetur sadipscing elitr,
      sed diam nonumy eirmod tempor invidunt ut labore et
      dolore magna aliquyam erat, sed diam voluptua.
</span>
If you invoke
<span class="pre-in-pp">
  .ENDNOTE_NUMBERS_ALIGN LEFT 2
</span>
the first digits of the numbers will line up flush left, like this
<span class="pre-in-pp">
  9.  Lorem ipsum dolor sit amet, consetetur sadipscing elitr,
      sed diam nonumy eirmod tempor invidunt ut labore et
      dolore magna aliquyam erat, sed diam voluptua.

10. Lorem ipsum dolor sit amet, consetetur sadipscing elitr,
      sed diam nonumy eirmod tempor invidunt ut labore et
      dolore magna aliquyam erat, sed diam voluptua.
</span>
The argument <kbd>&lt;number of placeholders&gt;</kbd> represents
the maximum size of the numbers, expressed as the number of
digits in the largest number.  Numbers in the range 0-9 require
1 placeholder; in the range 10-99, 2 placeholders; in the range
100-999 3 placeholders, and so on.
</p>

<p>
Therefore, if you have fewer than ten endnotes,
<br/>
<span class="pre-in-pp">
  .ENDNOTE_NUMBERS_ALIGN RIGHT 1
</span>
would ensure proper right alignment of endnote numbers.
</p>

<p>
Mom&#8217;s default for endnote number alignment is to align the
numbers right to two placeholders.
</p>

<div class="box-tip">
<p class="tip">
<span class="note">Note:</span>
ENDNOTE_NUMBERS_ALIGN can also be used to establish the alignment
and number of placeholders when your
<a href="#endnote-marker-style">ENDNOTE_MARKER_STYLE</a>
is <kbd>SUPERSCRIPT</kbd>.  Furthermore, it can be used to establish
the number of placeholders to reserve when your ENDNOTE_MARKER_STYLE
is <kbd>LINE</kbd>, even though, in such an instance, the numbers
themselves are always aligned right.  See
<a href="#endnote-linenumbers-note">here</a>
for examples.
</p>
</div>

<h2 id="margin-notes-intro" class="macro-group">Margin notes</h2>

<ul style="margin-left: -.5em;">
  <li><a href="#margin-notes-behaviour">Margin notes behaviour</a>
  <ul style="margin-left: -.5em;">
    <li><a href="#margin-notes-vertical">Adjusting the vertical position of margin notes</a></li>
  </ul></li>
  <li><a href="#mn-init">Macro: <b>MN_INIT</b></a> &ndash; set margin notes parameters</li>
  <li><a href="#mn">Tag: MN</a></li>
</ul>

<p>
Margin notes are short annotations that appear in either the left
or right margin of a document.  Sometimes they comment on the text.
Sometimes they assist in following the &#8220;flow&#8221; of a
document by summarizing the subject of a portion of text.  Sometimes
they&#8217;re comments to yourself in a draft copy.
</p>

<p>
The margin notes macros and routines in om.tmac (mom) are
&#8220;mommified&#8221; versions of the margin notes macros and
routines written by Werner Lemberg and patched by Gaius Mulley.
</p>

<h3 id="margin-notes-behaviour" class="docs">Margin notes behaviour</h3>

<p>
First things first: before you enter your first margin note, you
must &#8220;initialize&#8221; margin notes with
<a href="#mn-init">MN_INIT</a>.
MN_INIT sets up the style parameters for margin notes, including
things like
<a href="definitions.html#font">font</a>,
<a href="definitions.html#family">family</a>
and
<a href="definitions.html#leading">leading</a>.
MN_INIT may be called before or after
<a href="docprocessing.html#start">START</a>.
</p>

<p>
After initializing margin notes, you create margin notes with the
<a href="#mn">MN</a>
macro.  Based on the argument you pass MN, your margin note will go
in either the left or the right margin.
</p>

<p>
Margin notes are tricky from a typographic standpoint with respect
to vertical placement.  Since the leading of margin notes may differ
from that of
<a href="definitions.html#running">running text</a>,
it&#8217;s impossible for mom to guess whether to align
the first lines of margin notes with a document
<a href="definitions.html#baseline">baseline</a>,
whether to align the last lines of margin notes with a document
baseline, or whether to centre them, vertically, so that neither
first nor last line aligns with anything!
</p>

<p>
Given this difficulty, mom always aligns the first line of any
margin note with a document baseline.  If you want a different
behaviour, you must adjust the position(s) of margin notes yourself,
on a note by note basis.  (See
<a href="#margin-notes-vertical">Adjusting the vertical position of margin notes</a>.)
</p>

<p>
Generally speaking, mom tries to place margin notes at the point
where you invoke
<a href="#mn">MN</a>.
However, in the event that a margin note runs deep, she may not be
able to place a subsequent margin note exactly where you want.  In
such an instance, mom will &#8220;shift&#8221; the margin note down
on the page, placing it one (margin note) linespace beneath the
previous margin note (plus whatever vertical space is required to
get the first line to line up with a baseline of running text).  A
warning will be issued, letting you know this has happened, and
where.
</p>

<p>
Sometimes, if a margin note has to be shifted down, there simply
isn&#8217;t enough room to start the margin note on the page on
which <kbd>.MN</kbd> is invoked.  In that case, mom ignores the
margin note entirely and issues a warning, letting you know what
she&#8217;s done, and where. </p>

<p>
In the event that a margin note, sucessfully begun on a page, runs
past your bottom margin (or the last line before footnotes begin),
the margin note will &#8220;flow&#8221; onto the next page.  If
it is a &#8220;left&#8221; margin note, it will continue in the
left margin.  If it is a &#8220;right&#8221; margin note, it will
continue in the right margin.
</p>

<p>
If your document is being set in two columns, mom will sensibly and
automatically set all margin notes pertaining to the left column in
the left margin, and all margin notes pertaining to the right column
in the right margin, regardless of the &#8220;direction&#8221;
argument you give the MN tag.  If you try to use MN in documents of
more than two columns, mom will ignore all margin notes, and issue
a warning for each.
</p>

<h3 id="margin-notes-vertical" class="docs">Adjusting the vertical position of margin notes</h3>

<p>
When the
<a href="definitions.html#term-leading">leading</a>
of margin notes differs from the leading used throughout a document,
you may want to adjust the vertical position of individual margin
notes.  This is most often going to be the case with margin notes
that end near the bottom of the page, where you want the last line
of the margin note to line up with the last line of text on the
page.
</p>

<p>
Adjustments to the vertical position of margin notes must be done
inside the margin note (ie after <kbd>.MN</kbd>), at the top,
before entering text.  The commands to use are
<kbd>\!<a href="typesetting.html#ald">.ALD</a></kbd>
(to lower the margin note) and
<kbd>\!<a href="typesetting.html#rld">.RLD</a></kbd>
(to raise it).

The <kbd>\!</kbd> must precede the macros, or they
won&#8217;t have any effect.
</p>

<div class="box-macro-args">
Macro: <b>MN_INIT</b> <kbd class="macro-args">&lt;arguments&gt; (see list)</kbd>
</div>

<h4 style="margin-top: .75em; margin-left: .5em; font-style: normal; font-weight: bold: font-size: 105%; color: #6f614a;">Argument list:</h4>

<span class="pre" style="margin-top: -1.5em; margin-left: .5em;">
RAGGED | SYMMETRIC
&lt;L_WIDTH&gt;   &lt;value&gt;
&lt;R_WIDTH&gt;   &lt;value&gt;
&lt;GUTTER&gt;    &lt;value&gt;
&lt;FONTSTYLE&gt; &lt;value&gt;
&lt;SIZE&gt;      &lt;value&gt;
&lt;LEAD&gt;      &lt;value&gt;
&lt;COLOR&gt;     &lt;value&gt;
&lt;HY&gt;        &lt;value&gt;
</span>

<p style="margin-top: 1.25em;">
Before you enter your first margin note, you must initialize
the style parameters associated with margin notes using MN_INIT.
If you forget to do so, mom will issue a warning and abort.
</p>

<p>
The arguments may be entered in any order, and since the list is
long, use of the backslash character ( <kbd>\</kbd> ) to put each on
a separate line is recommended, e.g.,
<br/>
<span class="pre-in-pp">
  .MN_INIT \
  SYMMETRIC \
  L_WIDTH 4P \
  SIZE 8 \
  LEAD 9 \
  HY 14
</span>
All arguments are optional, but since mom requires you to run
MN_INIT before entering margin notes, you should, at a minimum, set
the <kbd>RAGGED</kbd> or <kbd>SYMMETRIC</kbd> parameter.  
You will almost certainly want to set <kbd>L_WIDTH</kbd>, <kbd>R_WIDTH</kbd>,
<kbd>SIZE</kbd> and <kbd>LEAD</kbd> as well.
</p>

<h4 class="docs arg-list"><kbd>RAGGED | SYMMETRIC</kbd></h4>

<p>
If the argument <kbd>RAGGED</kbd> is given, both left and
right margin notes will be flush left.  If the argument
<kbd>SYMMETRIC</kbd> is given, left margin notes will be set flush
<i>right</i>, and right margin notes flush <i>left</i>.  The effect
is something like this:
<br/>
<span class="pre-in-pp">
         A left    This is a meaningless batch        A right
    margin note    of text whose sole purpose is      margin note
      with just    to demonstrate how the sym-        with just
    a few words    metric argument to MN sets left    a few words
         in it.    and right margin notes.            in it.
</span>
</p>

<p>
If the argument is omitted, both left and right margin notes will
be set justified.  (Justified is usually not a good idea, since the
narrow measure of margin notes makes pleasing justification a near
impossibility.)
</p>

<h4 class="docs arg-list"><kbd>L_WIDTH &lt;value&gt;</kbd></h4>

<p>
The width of left margin notes.  A
<a href="definitions.html#unitofmeasure">unit of measure</a>
must be appended directly onto the argument.  The default is to set
left margin notes right out to the edge of the page, which is almost
certainly not what you want, so you should give a value for this
argument if using left margin notes.
</p>

<h4 class="docs arg-list"><kbd>R_WIDTH &lt;value&gt;</kbd></h4>

<p>
The width of right margin notes.  A
<a href="definitions.html#unitofmeasure">unit of measure</a>
must be appended directly onto the argument.  The default is to
set right margin notes right out to the edge of the page, which is
almost certainly not what you want, so you should give a value for
this argument if using right margin notes.
</p>

<h4 class="docs arg-list"><kbd>GUTTER &lt;value&gt;</kbd></h4>

<p>
The
<a href="definitions.html#gutter">gutter</a>
between margin notes and
<a href="definitions.html#running">running text</a>.
A
<a href="definitions.html#unitofmeasure">unit of measure</a>
must be appended directly onto the argument.  The gutter applies to
both left and right margin notes. The default is 1
<a href="definitions.html#em">em</a>.
</p>

<h4 class="docs arg-list"><kbd>FONTSTYLE &lt;value&gt;</kbd></h4>

<p>
The family+font for margin notes.  Yes, that&#8217;s right: the
family <i>plus</i> font combo.  For example, if you want Times
Roman Medium, the argument must be <kbd>TR</kbd>.  If you want Palatino
Medium Italic, the argument must be <kbd>PI</kbd>.  The default is the same
family+font combo used for a document&#8217;s paragraph text.
</p>

<h4 class="docs arg-list"><kbd>SIZE &lt;value&gt;</kbd></h4>

<p>
The point size of type for margin notes.  There is no need to append a
<a href="definitions.html#unitofmeasure">unit of measure</a>
to the argument;
<a href="definitions.html#picaspoints">points</a>
is assumed (although there&#8217;s nothing preventing you from
appending an alternative unit of measure directly to the argument).
The default is for margin notes to use the same point size of type
as is used in document paragraphs.
</p>

<h4 class="docs arg-list"><kbd>LEAD &lt;value&gt;</kbd></h4>

<p>
The
<a href="definitions.html#leading">leading</a>
of margin notes.  <kbd>&lt;LEAD&gt;</kbd> takes
<a href="definitions.html#picaspoints">points</a>
as its unit of measure, so don&#8217;t tack a unit of measure onto
the end of the argument.  The default lead is the same as paragraph
text (ie the document&#8217;s base leading).
</p>

<h4 class="docs arg-list"><kbd>COLOR &lt;value&gt;</kbd></h4>

<p>
The colour of margin notes.  The colour must be pre-initialized
with
<a href="color.html#newcolor">NEWCOLOR</a>
or
<a href="color.html#xcolor">XCOLOR</a>.
The default is black.
</p>

<h4 class="docs arg-list"><kbd>HY &lt;value&gt;</kbd></h4>

<p>
<kbd>&lt;value&gt;</kbd> is a digit telling groff how you want margin
notes hyphenated.
<br/>
<span class="pre-in-pp">
  0 = do not hyphenate
  1 = hyphenate without restrictions
  2 = do not hyphenate the last word on the page
  4 = do not hyphenate the last two characters of a word
  8 = do not hyphenate the first two characters of a word
</span>
The values can be added together, so, for example, if you want
neither the first two nor the last two characters of words
hyphenated, the hyphenation-flag would be 12.  The default value is
14 (ie 2+4+8).
</p>

<div class="box-macro-args">
Macro: <b>MN</b> <kbd class="macro-args">LEFT | RIGHT</kbd>
</div>

<p>
Once you&#8217;ve initialized margin notes with
<kbd><a href="#mn-init">.MN_INIT</a></kbd>,
you can enter margin notes any time you like with <kbd>.MN</kbd>.
An argument of <kbd>LEFT</kbd> will set a left margin note.  An
argument of <kbd>RIGHT</kbd> will set a right margin note.
</p>

<p>
Any argument, such as <kbd>OFF</kbd> (or <kbd>QUIT, END, X</kbd>,
etc) exits the current margin note.
</p>

<h2 id="finis-intro" class="macro-group">Document termination string</h2>

<ul style="margin-left: -.5em;">
  <li><a href="#finis">Tag: FINIS</a></li>
  <li><a href="#finis-control">FINIS control macros</a>
  <ul style="margin-left: -1.25em;">
    <li><a href="#finis-string">Changing the FINIS string</a></li>
    <li><a href="#finis-string-caps">Automatic capitalization of the FINIS string</a></li>
    <li><a href="#finis-color">Changing the FINIS colour</a></li>
    <li><a href="#finis-no-dashes">Removing the dashes around FINIS</a></li>
  </ul></li>
</ul>

<p>
The use of FINIS is optional.  If you invoke it at the end of a
document (before
<kbd><a href="#endnotes">.ENDNOTES</a></kbd>,
<kbd><a href="refer.html#bibliography">.BIBLIOGRAPHY</a></kbd>
or
<kbd><a href="tables-of-contents.html#toc">.TOC</a></kbd>)
mom deposits the word, <b>END</b>, centred after a blank line,
beneath the last line of the document. <b>END</b> is enclosed
between
<a href="definitions.html#em">em-dashes</a>,
like this:
<br/>
<span class="pre-in-pp">
  ...and they all lived happily ever after.

&mdash; END &mdash;
</span>
If there is insufficient room for FINIS on the last page of a
document, mom will alert you on stderr.
</p>

<p>
If you&#8217;re writing in a language other than English, you can
change what mom prints for END with the control macro
<a href="#finis-string">FINIS_STRING</a>.
</p>

<div class="macro-id-overline">
<h3 id="finis" class="macro-id">FINIS</h3>
</div>

<div class="box-macro-args">
Macro: <b>FINIS</b>
</div>

<p>
The use of FINIS is optional, but if you use it, it should be the
last macro you invoke in a document before
<kbd><a href="#endnotes">.ENDNOTES</a></kbd>,
<kbd><a href="refer.html#bibliography">.BIBLIOGRAPHY</a></kbd>
or
<kbd><a href="tables-of-contents.html#toc">.TOC</a></kbd>.
See
<a href="#finis-intro">above</a>
for a description of how FINIS behaves.
</p>

<div class="box-tip">
<p class="tip">
<span class="note">Note:</span>
If you don&#8217;t use FINIS, and you don&#8217;t want
<a href="definitions.html#footer">footers</a>
(if they&#8217;re on) or a page number at the bottom of the last
page of a document, you have to turn them off manually, as the last
two lines of your document file, like this:
<br/>
<span class="pre-in-pp">
  .FOOTERS OFF
  .PAGINATE OFF
</span>
</p>
</div>

<h3 id="finis-control" class="docs" style="margin-bottom: -1em">Finis contol macros</h3>

<p>
Since FINIS is only used once in a document, it has few control
macros.  It is expected that you will make changes to style
parameters such as family, font, and size with
<a href="definitions.html#inlines">inline escapes</a>
in the FINIS string itself (see below).  
</p>

<h4 id="finis-string" class="docs" style="margin-top: -.5em">Changing the FINIS string</h4>

<p>
By default, FINIS prints the word, END, between
<a href="definitions.html#em">em-dashes</a>.
If you&#8217;d like mom to print something else between the dashes,
use the FINIS_STRING macro (anywhere in the document prior to
FINIS).
</p>

<p>
For example, if your document&#8217;s in French, you&#8217;d do
<br/>
<span class="pre-in-pp">
    .FINIS_STRING "FIN"
</span>
Double-quotes must enclose the macro&#8217;s argument.
</p>

<div class="box-tip">
<p class="tip">
<span class="note">Note:</span>
If you pass FINIS_STRING a blank string, ie
<br/>
<span class="pre-in-pp">
    .FINIS_STRING ""
</span>
mom will still print the em-dashes when you invoke
<kbd>.FINIS</kbd>.  This, in effect, produces a short, centred
horizontal rule that terminates the document.  (In
<a href="docprocessing.html#printstyle">PRINTSTYLE <kbd>TYPEWRITE</kbd></a>,
it&#8217;s a short, dashed line composed of four hyphens.)
</p>
</div>

<h4 id="finis-string-caps" class="docs">Automatic capitalization of the FINIS string</h4>

<p>
By default, mom sets the string you pass to FINIS all-caps.
If you&#8217;d prefer that she not do so, but rather respect
the FINIS string exactly as you enter it, invoke the macro
<kbd>.FINIS_STRING_CAPS</kbd> with the <kbd>OFF</kbd> argument, like
this:
<br/>
<span class="pre-in-pp">
    .FINIS_STRING_CAPS OFF
</span>
<kbd>OFF</kbd>, above, could be anything, e.g., <kbd>NO</kbd> or
<kbd>X</kbd>.
</p>

<h4 id="finis-color" class="docs">Changing the FINIS colour</h4>

<p>
Invoking the control macro <kbd>.FINIS_COLOR</kbd> with a
pre-defined (or &#8220;initalized&#8221;) colour changes the colour
of both the FINIS string and the em-dashes that surround it.  If you
use the
<a href="definitions.html#inline">inline escape</a>,
<a href="color.html#color-inline"><kbd>\*[&lt;colourname&gt;]</kbd></a>,
in the argument passed to FINIS, only the text will be in the
new colour; the em-dashes will be in the default document colour
(usually black).
</p>

<h4 id="finis-no-dashes" class="docs">Removing the dashes around FINIS</h4>

<p>
If you don&#8217;t want the dashes around the FINIS string, you can
remove them with
<br/>
<span class="pre-in-pp">
  .FINIS_NO_DASHES
</span>
</p>

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