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diff --git a/doc/groff.html.node/Font-Families.html b/doc/groff.html.node/Font-Families.html new file mode 100644 index 0000000..f631c1a --- /dev/null +++ b/doc/groff.html.node/Font-Families.html @@ -0,0 +1,182 @@ +<!DOCTYPE html> +<html> +<!-- Created by GNU Texinfo 7.0.3, https://www.gnu.org/software/texinfo/ --> +<head> +<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> +<!-- This manual documents GNU troff version 1.23.0. + +Copyright © 1994-2023 Free Software Foundation, Inc. + +Permission is granted to copy, distribute and/or modify this document +under the terms of the GNU Free Documentation License, Version 1.3 or +any later version published by the Free Software Foundation; with no +Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A +copy of the license is included in the section entitled "GNU Free +Documentation License". --> +<title>Font Families (The GNU Troff Manual)</title> + +<meta name="description" content="Font Families (The GNU Troff Manual)"> +<meta name="keywords" content="Font Families (The GNU Troff Manual)"> +<meta name="resource-type" content="document"> +<meta name="distribution" content="global"> +<meta name="Generator" content="makeinfo"> +<meta name="viewport" content="width=device-width,initial-scale=1"> + +<link href="index.html" rel="start" title="Top"> +<link href="Request-Index.html" rel="index" title="Request Index"> +<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents"> +<link href="Using-Fonts.html" rel="up" title="Using Fonts"> +<link href="Font-Positions.html" rel="next" title="Font Positions"> +<link href="Selecting-Fonts.html" rel="prev" title="Selecting Fonts"> +<style type="text/css"> +<!-- +a.copiable-link {visibility: hidden; text-decoration: none; line-height: 0em} +div.example {margin-left: 3.2em} +span.r {font-family: initial; font-weight: normal; font-style: normal} +span:hover a.copiable-link {visibility: visible} +strong.def-name {font-family: monospace; font-weight: bold; font-size: larger} +--> +</style> + + +</head> + +<body lang="en"> +<div class="subsection-level-extent" id="Font-Families"> +<div class="nav-panel"> +<p> +Next: <a href="Font-Positions.html" accesskey="n" rel="next">Font Positions</a>, Previous: <a href="Selecting-Fonts.html" accesskey="p" rel="prev">Selecting Fonts</a>, Up: <a href="Using-Fonts.html" accesskey="u" rel="up">Using Fonts</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Request-Index.html" title="Index" rel="index">Index</a>]</p> +</div> +<hr> +<h4 class="subsection" id="Font-Families-1">5.19.2 Font Families</h4> +<a class="index-entry-id" id="index-font-families"></a> +<a class="index-entry-id" id="index-families_002c-font"></a> +<a class="index-entry-id" id="index-font-styles"></a> +<a class="index-entry-id" id="index-styles_002c-font"></a> + +<p>To accommodate the wide variety of fonts available, GNU <code class="code">troff</code> +distinguishes <em class="dfn">font families</em> and <em class="dfn">font styles</em>. A resolved +font name is the catenation of a font family and a style. Selecting an +abstract style causes GNU <code class="code">troff</code> to combine it with the default +font family. +</p> +<p>You can thus compose a document using abstract styles exclusively for +its body or running text, selecting a specific family only for titles or +examples, for instance, and change the default family on the command +line (recall <a class="ref" href="Groff-Options.html">Options</a>). +</p> +<p>Fonts for the devices <code class="code">ps</code>, <code class="code">pdf</code>, <code class="code">dvi</code>, <code class="code">lj4</code>, +<code class="code">lbp</code>, and the X11 devices support this mechanism. By default, +GNU <code class="code">troff</code> uses the Times family with the four styles ‘<samp class="samp">R</samp>’, +‘<samp class="samp">I</samp>’, ‘<samp class="samp">B</samp>’, and ‘<samp class="samp">BI</samp>’. +</p> +<dl class="first-deffn"> +<dt class="deffn" id="index-_002efam"><span class="category-def">Request: </span><span><strong class="def-name"><code class="t">.fam</code></strong> <var class="def-var-arguments">[<span class="r"><i class="slanted">family</i></span>]</var><a class="copiable-link" href='#index-_002efam'> ¶</a></span></dt> +<dd><a class="index-entry-id" id="index-fam"></a> +</dd><dt class="deffnx def-cmd-deffn" id="index-_005cn_005b_002efam_005d"><span class="category-def">Register: </span><span><strong class="def-name"><code class="t">\n[.fam]</code></strong><a class="copiable-link" href='#index-_005cn_005b_002efam_005d'> ¶</a></span></dt> +<dd><a class="index-entry-id" id="index-_002efam-1"></a> +</dd><dt class="deffnx def-cmd-deffn" id="index-_005cFf"><span class="category-def">Escape sequence: </span><span><strong class="def-name"><code class="t">\F</code><span class="r"><i class="slanted">f</i></span><code class="t"></code></strong><a class="copiable-link" href='#index-_005cFf'> ¶</a></span></dt> +<dd><a class="index-entry-id" id="index-_005cF"></a> +</dd><dt class="deffnx def-cmd-deffn" id="index-_005cF_0028fm"><span class="category-def">Escape sequence: </span><span><strong class="def-name"><code class="t">\F(</code><span class="r"><i class="slanted">fm</i></span><code class="t"></code></strong><a class="copiable-link" href='#index-_005cF_0028fm'> ¶</a></span></dt> +<dt class="deffnx def-cmd-deffn" id="index-_005cF_005bfamily_005d"><span class="category-def">Escape sequence: </span><span><strong class="def-name"><code class="t">\F[</code><span class="r"><i class="slanted">family</i></span><code class="t">]</code></strong><a class="copiable-link" href='#index-_005cF_005bfamily_005d'> ¶</a></span></dt> +<dd><a class="index-entry-id" id="index-changing-font-family-_0028fam_002c-_005cF_0029"></a> +<a class="index-entry-id" id="index-font-family_002c-changing-_0028fam_002c-_005cF_0029"></a> +<p>Set the default font family, used in combination with abstract styles to +construct a resolved font name, to <var class="var">family</var> (one-character +name <var class="var">f</var>, two-character name <var class="var">fm</var>). If no argument is +given, GNU <code class="code">troff</code> selects the previous font family; if there none, +is it falls back to the device’s default<a class="footnote" id="DOCF76" href="groff.html_fot.html#FOOT76"><sup>76</sup></a> or its own (‘<samp class="samp">T</samp>’). +</p> +<p>The <code class="code">\F</code> escape sequence works similarly. In disanalogy to +<code class="code">\f</code>, ‘<samp class="samp">\FP</samp>’ makes ‘<samp class="samp">P</samp>’ the default family. Use +‘<samp class="samp">\F[]</samp>’ to select the previous default family. The default font +family is available in the read-only string-valued register <code class="code">.fam</code>; +it is associated with the environment (see <a class="pxref" href="Environments.html">Environments</a>). +</p> +<div class="example"> +<div class="group"><pre class="example-preformatted">spam, \" startup defaults are T (Times) R (roman) +.fam H \" make Helvetica the default family +spam, \" family H + style R = HR +.ft B \" family H + style B = HB +spam, +.ft CR \" Courier roman (default family not changed) +spam, +.ft \" back to Helvetica bold +spam, +.fam T \" make Times the default family +spam, \" family T + style B = TB +.ft AR \" font AR (not a style) +baked beans, +.ft R \" family T + style R = TR +and spam. +</pre></div></div> + +<p><code class="code">\F</code> doesn’t produce an input token in GNU <code class="code">troff</code>. As a +consequence, it can be used in requests like <code class="code">mc</code> (which expects +a single character as an argument) to change the font family on the fly. +</p> +<div class="example"> +<div class="group"><pre class="example-preformatted">.mc \F[P]x\F[] +</pre></div></div> +</dd></dl> + +<dl class="first-deffn"> +<dt class="deffn" id="index-_002esty"><span class="category-def">Request: </span><span><strong class="def-name"><code class="t">.sty</code></strong> <var class="def-var-arguments">n style</var><a class="copiable-link" href='#index-_002esty'> ¶</a></span></dt> +<dd><a class="index-entry-id" id="index-sty"></a> +</dd><dt class="deffnx def-cmd-deffn" id="index-_005cn_005b_002esty_005d"><span class="category-def">Register: </span><span><strong class="def-name"><code class="t">\n[.sty]</code></strong><a class="copiable-link" href='#index-_005cn_005b_002esty_005d'> ¶</a></span></dt> +<dd><a class="index-entry-id" id="index-_002esty-1"></a> +<a class="index-entry-id" id="index-setting-up-an-abstract-font-style-_0028sty_0029"></a> +<a class="index-entry-id" id="index-abstract-font-style_002c-setting-up-_0028sty_0029"></a> +<a class="index-entry-id" id="index-font-style_002c-abstract_002c-setting-up-_0028sty_0029"></a> +<a class="index-entry-id" id="index-style_002c-font_002c-abstract_002c-setting-up-_0028sty_0029"></a> +<a class="index-entry-id" id="index-cs-request_002c-and-font-styles"></a> +<a class="index-entry-id" id="index-bd-request_002c-and-font-styles"></a> +<a class="index-entry-id" id="index-tkf-request_002c-and-font-styles"></a> +<a class="index-entry-id" id="index-uf-request_002c-and-font-styles"></a> +<a class="index-entry-id" id="index-fspecial-request_002c-and-font-styles"></a> +<p>Associate an abstract style <var class="var">style</var> with mounting +position <var class="var">n</var>, which must be a non-negative integer. If the +requests <code class="code">cs</code>, <code class="code">bd</code>, <code class="code">tkf</code>, <code class="code">uf</code>, or <code class="code">fspecial</code> +are applied to an abstract style, they are instead applied to the member +of the current family corresponding to that style. +</p> +<a class="index-entry-id" id="index-DESC-1"></a> +<a class="index-entry-id" id="index-styles-1"></a> +<p>The default family can be set with the <samp class="option">-f</samp> option (see <a class="pxref" href="Groff-Options.html">Options</a>). The <code class="code">styles</code> command in the <samp class="file">DESC</samp> file controls +which font positions (if any) are initially associated with abstract +styles rather than fonts. +</p> +<p><strong class="strong">Caution:</strong> The <var class="var">style</var> argument is not validated. +Errors may occur later, when the formatter attempts to construct a +resolved font name, or format a character for output. +</p> +<div class="example"> +<div class="group"><pre class="example-preformatted">.nr BarPos \n[.fp] +.sty \n[.fp] Bar +.fam Foo +.ft \n[BarPos] +.tm .f=\n[.f] +A + error→ error: no font family named 'Foo' exists + error→ .f=41 + error→ error: cannot format glyph: no current font +</pre></div></div> + +<p>When an abstract style has been selected, the read-only string-valued +register ‘<samp class="samp">.sty</samp>’ interpolates its name; this datum is associated +with the environment (see <a class="pxref" href="Environments.html">Environments</a>). Otherwise, ‘<samp class="samp">.sty</samp>’ +interpolates nothing. +</p></dd></dl> + + +</div> +<hr> +<div class="nav-panel"> +<p> +Next: <a href="Font-Positions.html">Font Positions</a>, Previous: <a href="Selecting-Fonts.html">Selecting Fonts</a>, Up: <a href="Using-Fonts.html">Using Fonts</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Request-Index.html" title="Index" rel="index">Index</a>]</p> +</div> + + + +</body> +</html> |