SWAP
====

Function
--------

**SWAP** exchanges the values of two variables.

Syntax
------

SWAP variable 1, variable 2

Example
-------

::

   SWAP A,B

this will put the value of variable A into B and the value of B into A.

::

   SWAP A$,BS

this will put the contents of A$ into B$ and the contents of B$ into A$.

Remark
------

Any type of variables may be swapped (single precision, double precision
or string), but the two variables must be of the same type or a Type
Mismatch error will occur.