blem with very long lists.  When the function takes several
   list arguments, an approximate formula giving stack usage (in some
   unspecified constant unit) is shown in parentheses.</p>

<p>The above considerations can usually be ignored if your lists are not
   longer than about 10000 elements.</p>

<p>The labeled version of this module can be used as described in the
   <a href="StdLabels.html"><code class="code">StdLabels</code></a> module.</p>
</div>
</div>
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