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authorKarl Berry <karl@freefriends.org>2006-01-09 00:56:57 +0000
committerKarl Berry <karl@freefriends.org>2006-01-09 00:56:57 +0000
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+<?xml version="1.0" encoding="iso-8859-1" ?>
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
+ "xhtml1-transitional.dtd">
+<!--http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd-->
+<html xmlns="http://www.w3.org/1999/xhtml"
+>
+<head><title>Modify</title>
+<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
+<meta name="generator" content="TeX4ht (http://www.cis.ohio-state.edu/~gurari/TeX4ht/mn.html)" />
+<meta name="originator" content="TeX4ht (http://www.cis.ohio-state.edu/~gurari/TeX4ht/mn.html)" />
+<!-- xhtml,th4,index -->
+<meta name="src" content="mn.tex" />
+<meta name="date" content="2004-02-11 18:07:00" />
+<link rel="stylesheet" type="text/css" href="mn.css" />
+</head><body
+>
+ <a
+ href="mn-port.html#mn33.html" >exit Modify</a>
+ <h3 class="SubSectionHead"><a
+ name="QQ1-33-42"></a>The Composition of tex4ht.env</h3>
+ <a
+ name="index33-42001"></a>TeX4ht consults this file for system-dependent information. The file consists of a sequence of directives, where
+each directive occupies a line and is identified with a distinguished character code in the first column. The following
+are the possible character codes and their meaning.
+<dl >
+ <dt>b</dt><dd>
+This character identifies for <span class="cmtt-10">tex4ht </span>a comment to be placed in the &#8216;<span class="cmtt-10">.lg</span>&#8217; file, before the <a
+ href="mn37.html#bsc" name="bsc-1">scripts</a> for creating pictures
+for symbols.
+ </dd><dt>g</dt><dd>
+<a
+ name="index33-42002"></a>This character identifies the extension tex4ht should associate to names of the files of pictures it creates. The default
+corresponds to a setting of the form &#8216;<span class="cmtt-10">g.gif</span>&#8217;.
+<!--l. 5528--><p class="indent"> A directory name can also be encoded into tex4ht during compilation time through the variable
+<a
+ href="mn36.html#x-LGTYP" name="LGTYP">LGTYP</a>.
+</p><!--l. 5532--><p class="indent"> Alternatively, an extension can be provided in the command line of tex4ht, in which case the character code
+should be present and immediately preceded by a &#8216;<span class="cmtt-10">-</span>&#8217; character.
+</p>
+ </dd><dt>i</dt><dd>
+This character identifies to <span class="cmtt-10">tex4ht </span>a directory <a
+ href="mn39.html#ch-i" name="ch.i">where</a> the hypertext font (.htf) files of <span class="cmtt-10">tex4ht </span>are
+stored.
+ </dd><dt>l</dt><dd>
+<a
+ name="index33-42003"></a>This character identifies a <a
+ href="mn34.html" name="mn34.html" >bookkeeping file</a> where <span class="cmtt-10">tex4ht </span>can record information about paths to files it uses.
+ </dd><dt>s</dt><dd>
+This character identifies to <span class="cmtt-10">tex4ht </span>a <a
+ href="mn37.html#sc" name="sc-1">command</a> for requesting in the <span class="cmtt-10">lg </span>file the translation of dvi pictures to
+bitmaps. When needed, a sequence of such commands can be placed in consecutive lines to form a block of
+commands for handling the translation.
+ </dd><dt>t</dt><dd>
+<a
+ name="index33-43005"></a>This character identifies to <span class="cmtt-10">tex4ht </span>the directory <a
+ href="mn35.html" name="mn35.html" >where</a> the font metric (.tfm) files of TeX are stored.
+ </dd><dt>A</dt><dd>
+This character identifies to <span class="cmtt-10">t4ht </span>a <a
+ href="mn-unix.html#accscript">script</a> for changing access mode of files.
+ </dd><dt>C</dt><dd>
+This character identifies a <a
+ href="mn-unix.html#mvscript">script</a> for satisfying requests made in the <span class="cmtt-10">lg </span>file to copy files between directories.
+ </dd><dt>E</dt><dd>
+This character identifies a <a
+ href="mn-unix.html#mvscript">script</a> for satisfying requests made in the <span class="cmtt-10">lg </span>file to get substitutions for empty
+pictures.
+ </dd><dt>F</dt><dd>
+This character identifies to <span class="cmtt-10">t4ht </span>a <a
+ href="mn-unix.html#dv2gif">script</a> for translating into other formats characters from dvi files.
+ </dd><dt>G</dt><dd>
+This character identifies to <span class="cmtt-10">t4ht </span>a <a
+ href="mn-unix.html#dv2gif">script</a> for translating general dvi figures into other formats.
+ </dd><dt>M</dt><dd>
+This character identifies a <a
+ href="mn-unix.html#mvscript">script</a> for satisfying requests made in the <span class="cmtt-10">lg </span>file to move files between directories.
+ </dd><dt>S</dt><dd>
+This character specifies what security measures <span class="cmtt-10">t4ht </span>should take when invoking other utilities. In the absence of
+this directive, all the calls to system services are ignored. On the other hand, a directive of the form &#8216;<span class="cmtt-10">S*</span>&#8217; allows all
+system calls. A selective access to system calls can be obtained with <span class="cmtt-10">S </span>directives, which specify the prefixes of
+command names that should be allowed to go through.
+<!--l. 5757--><p class="indent"> The <span class="cmtt-10">S </span>directives can be fed as switches to the command lines <span class="cmtt-10">t4ht</span>.
+</p>
+ </dd><dt>P</dt><dd>
+A variant of he <span class="cmtt-10">S </span>switch for <span class="cmtt-10">tex4ht</span>. Rarely useful.
+ </dd><dt>X</dt><dd>
+This character identifies to <span class="cmtt-10">t4ht </span>a script for postprocessing the files which <span class="cmtt-10">tex4ht </span>outputs. The file names are
+represented by &#8216;<span class="cmtt-10">%%1</span>&#8217;, and their extensions by &#8216;<span class="cmtt-10">%%2</span>&#8217;. Such scripts, for instance, may invoke validators to check the
+correctness of the files against given DTD&#8217;s and request XSL transformations.
+<!--l. 5770--><p class="indent"> The command line of <span class="cmtt-10">t4ht </span>may include a flag &#8216;<span class="cmtt-10">-X</span>&#8217; whose content is represented by &#8216;<span class="cmtt-10">%%3</span>&#8217; in the
+script.
+</p><!--l. 5774--><p class="indent"> Example: <span class="cmtt-10">Xmake -f mymake name=%%1 ext=%%2 %%3</span>
+</p>
+ </dd><dt><span class="cmbx-10">. </span>(dot)</dt><dd>
+A variant of the X script applied to files whose extension names are provided after the dot. The file names are
+represented by &#8216;<span class="cmtt-10">%%1</span>&#8217;, and the jobnames by &#8216;<span class="cmtt-10">%%0</span>&#8217;.
+<!--l. 5780--><p class="indent"> Example: <span class="cmtt-10">.xml echo &#34;name=%%1.xml&#34;</span>
+</p>
+ </dd><dt><span class="cmtt-10">&lt;</span></dt><dd>
+Tagged script segments <span class="cmtt-10">&lt;tag&gt;...&lt;/tag&gt; </span>are scanned only if their names are specified within <span class="cmtt-10">-ctag </span>switches of
+<span class="cmtt-10">tex4ht.c </span>and <span class="cmtt-10">t4ht.c</span>. When such switches are not supplied, a the switch <span class="cmtt-10">-cdefault </span>is implicitly
+assumed.
+ </dd></dl>Lines starting with other characters are treated as comments, and empty lines may be treated as file
+terminators by <span class="cmtt-10">tex4ht </span>and <span class="cmtt-10">t4ht</span>.
+<!--l. 5796--><p class="noindent"><span class="cmbx-10">Examples: </span><a
+ href="tex4ht-env-unix.txt" >Unix-oriented</a>, <a
+ href="tex4ht-env-win32.txt" >MS-oriented</a>
+
+</p>
+
+</body></html>