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<head><title>ACL2-PC_colon__colon_NIL.html -- ACL2 Version 3.1</title></head>
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<h3>ACL2-PC::NIL</h3>(macro)
<code> </code>used for interpreting <code>control-d</code>
<pre>Major Section: <a href="PROOF-CHECKER-COMMANDS.html">PROOF-CHECKER-COMMANDS</a>
</pre><p>
<pre>
Example and General form:
nil
</pre>
(or, <code>control-d</code>).
<p>
The whole point of this command is that in some Lisps (including
akcl), if you type <code>control-d</code> then it seems, on occasion, to get
interpreted as <code>nil</code>. Without this command, one seems to get into an
infinite loop.
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