CHANGESTR.REX: Difference between revisions

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==the CHANGESTR function==
This a RYO version of the REXX function &nbsp; '''changestr''' &nbsp; (<u>change</u> <cu>str</u>ing).
 
It is included in some of the more modern Classic REXXes, but older versions of
<br>Classic REXX don't have this function as a &nbsp; BIF &nbsp; (<u>b</u>uilt-<u>i</u> n-<u>f</u>unction).