D.5.1.11 swap
.............
Procedure from library classify.lib (see classify_lib).

Usage:
swap(a,b);

Return:
b,a if b,a is the input (any type)

Example:
LIB "classify.lib";
swap("variable1","variable2");
==> variable2 variable1

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&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; User manual for <a href="http://www.singular.uni-kl.de/"><i>Singular</i></a> version 2-0-4, October 2002,
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