pan> <br />The specified <var>test</var> symbol is not evaluated; however the comparison
predicate that it designates must be available during expansion of the
<nobr><b>case-using</b></nobr> form.
</p>
<p>The <var>keyform</var> is first evaluated to produce the <nobr><var>test-key</var></nobr>.
</p>
<p>Each of the <var>clauses</var> is then considered in turn. If the
<nobr><var>test-key</var></nobr> matches that clause according to <var>test</var>, then the
forms in that clause are evaluated as an implicit 