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-<head>
-<title>UK TeX FAQ -- question label addtoreset</title>
-</head><body>
-<h3>Master and slave counters</h3>
-<p/>It&#8217;s common to have things numbered &#8220;per chapter&#8221; (for example, in
-the standard <i>book</i> and <i>report</i> classes, figures, tables
-and footnotes are all numbered thus). The process of resetting is
-done automatically, when the &#8220;master&#8221; counter is stepped (when the
-<code>\</code><code>chapter</code> command that starts chapter &lt;<i>n</i>&gt; happens, the
-<code>chapter</code> counter is stepped, and all the dependent counters are set
-to zero).
-<p/>How would you do that for yourself? You might want to number
-algorithms per section, or corollaries per theorem, for example. If
-you&#8217;re defining these things by hand, you declare the relationship
-when you define the counter in the first place:
-<blockquote>
-<code>\</code><code>newcounter{</code><em>new-name</em><code>}[</code><em>master</em><code>]</code>
-</blockquote><p>
-says that every time counter &lt;<i>master</i>&gt; is stepped, counter
-&lt;<i>new-name</i>&gt; will be reset.
-<p/>But what if you have an uncooperative package, that defines the
-objects for you, but doesn&#8217;t provide a programmer interface to make
-the counters behave as you want?
-<p/>The <code>\</code><code>newcounter</code> command uses a LaTeX internal command, and you
-can also use it:
-<blockquote>
-<code>\</code><code>@addtoreset{</code><em>new-name</em><code>}{</code><em>master</em><code>}</code>
-</blockquote><p>
-(but remember that it needs to be between <code>\</code><code>makeatletter</code> and
-<code>\</code><code>makeatother</code>, or in a package of your own).
-<p/>The <i>chngcntr</i> package encapsulates the <code>\</code><code>@addtoreset</code>
-command into a command <code>\</code><code>counterwithin</code>. So:
-<blockquote>
-<pre>
-\counterwithin*{corrollary}{theorem}
-</pre>
-</blockquote><p>
-will make the corollary counter slave to theorem counters. The
-command without its asterisk:
-<blockquote>
-<pre>
-\counterwithin{corrollary}{theorem}
-</pre>
-</blockquote><p>
-will do the same, and also redefine <code>\</code><code>thecorollary</code> as
-&lt;<i>theorem number</i>&gt;.&lt;<i>corollary number</i>&gt;, which is a good scheme
-if you ever want to refer to the corollaries &#8212; there are potentially
-many &#8220;corollary 1&#8221; in any document, so it&#8217;s as well to tie its number
-to the counter of the theorem it belongs to. This is true of pretty
-much any such counter-within-another; if you&#8217;re not using the
-<i>chngcntr</i>, refer to the answer to
-<a href="FAQ-the-commands.html">redefining counters&#8217; <code>\</code><code>the-</code>commands</a> for
-the necessary techniques.
-<p/>Note that the technique doesn&#8217;t work if the master counter is <code>page</code>,
-the number of the current page. The <code>page</code> counter is stepped deep
-inside the output routine, which usually gets called some time after
-the text for the new page has started to appear: so special
-techniques are required to deal with that. One special case is dealt
-with elsewhere: <a href="FAQ-footnpp.html">footnotes numbered per page</a>. One
-of the techniques described there, using package <i>perpage</i>,
-may be applied to any counter. The command:
-<blockquote>
-<code>\</code><code>MakePerPage{</code><em>counter</em><code>}</code>
-</blockquote><p>
-will cause &lt;<i>counter</i>&gt; to be reset for each page. The package uses
-a label-like mechanism, and may require more than one run of LaTeX
-to stabilise counter values &#8212; LaTeX will generate the usual
-warnings about labels changing.
-<dl>
-<dt><tt><i>chngcntr.sty</i></tt><dd><a href="http://mirror.ctan.org/macros/latex/contrib/chngcntr.zip">macros/latex/contrib/chngcntr</a> (or <a href="http://mirror.ctan.org/macros/latex/contrib/chngcntr/">browse the directory</a>); <a href="http://mirror.ctan.org/help/Catalogue/entries/chngcntr.html">catalogue entry</a>
-<dt><tt><i>perpage.sty</i></tt><dd>Distributed as part <a href="http://mirror.ctan.org/macros/latex/contrib/bigfoot.zip">macros/latex/contrib/bigfoot</a> (or <a href="http://mirror.ctan.org/macros/latex/contrib/bigfoot/">browse the directory</a>); <a href="http://mirror.ctan.org/help/Catalogue/entries/perpage.html">catalogue entry</a>
-</dl>
-<p/><p>This question on the Web: <a href="http://www.tex.ac.uk/cgi-bin/texfaq2html?label=addtoreset">http://www.tex.ac.uk/cgi-bin/texfaq2html?label=addtoreset</a>
-</body>