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<H1><A NAME="SECTION040290000000000000000"></A>
<A NAME="commands_undefine"></A><A NAME="undefine"></A><A NAME="7887"></A>
<BR>
Undefine
</H1>
Clear one or more previously defined user variables. This is useful in order
to reset the state of a script containing an initialization test.
<P>
Example:
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<BR>
<PRE>
undefine foo foo1 foo2
if (!exists("foo")) load "initialize.gp"
</PRE>
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<ADDRESS>
2010-08-17
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