File: ACL2-PC_colon__colon_RETAIN.html

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<head><title>ACL2-PC_colon__colon_RETAIN.html  --  ACL2 Version 3.1</title></head>
<body text=#000000 bgcolor="#FFFFFF">
<h3>ACL2-PC::RETAIN</h3>(atomic macro)
<code>   </code>drop all <strong>but</strong> the indicated top-level hypotheses
<pre>Major Section:  <a href="PROOF-CHECKER-COMMANDS.html">PROOF-CHECKER-COMMANDS</a>
</pre><p>


<pre>
Example:
(RETAIN 2 3) -- keep the second and third hypotheses, and drop
                the rest
<p>
General Form:
(retain &amp;rest args)
</pre>

Drop all top-level hypotheses <strong>except</strong> those with the indicated
indices.<p>

There must be at least one argument, and all must be in range (i.e.
integers between one and the number of top-level hypotheses,
inclusive).
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