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<html>
<head><title>Help On LaTeX Commands</title>
</head>
<body bgcolor="#ffffff" text="#000000" link="#000099" vlink="#cc0000" alink="#cc0000">
<h1><font size="-2">Hypertext Help with LaTeX</font><br><font color="#cc0000">LaTex Commands</font></h1>
<p>Commands take one of two forms:</p>
<ul>
<li>a backslash (<tt>\</tt>) followed by a single special character
<li>a backslash (<tt>\</tt>) followed by a string of letters
</ul>
<p>The second case is case-sensitive;
<a href="ltx-405.html"><tt>\Gamma</tt></a> is different from
<a href="ltx-405.html"><tt>\gamma</tt></a>.
These commands are terminated by a nonletter, i.e., a blank, a number,
a punctuation mark or special character. </p>
<p>For commands which produce text a trailing blank is interpreted as the
end of the command, which does not automatically create a space, so
you may have to do something to create an
<a href="ltx-431.html">interword space</a> after this text.</p>
<p>Commands may have mandatory arguments, which are input in braces
(<tt>{}</tt>).
They may also have optional arguments, which are input in square brackets
(<tt>[]</tt>).</p>
<H2>Defining new commands, etc.</H2>
<p>See: </p>
<ul>
<li><A href="ltx-18.html"><tt>\newcommand</tt></A>
<li><A href="ltx-19.html"><tt>\newenvironment</tt></A>
<li><A href="ltx-20.html"><tt>\newtheorem</tt></A>
<li><A href="ltx-21.html"><tt>\newfont</tt></A>
</ul>
These must be used for entities which are not already defined. To
redefine something use, for example,
<A href="ltx-18.html"><tt>\renewcommand</tt></A>.
<hr>
Return to the <a href="ltx-2.html">LaTeX Table of Contents</a>
<hr>
<address>
Revised: Sheldon Green, 03 Nov 1995.
</address>
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</html>
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