A few rules to remember in Rexx

A few rules to remember in Rexx:

1) Allways have the first line as /*REXX*/ in the code.
2) Rexx is not case sensitive
3) There is no need of declaration of a variable in Rexx it can be written dynamically
4) All the Variables used in single PS or PDS(Member) considered as Global Variables as in all the Functions used inside a Rexx code is able to access it without passing it.
5) If the Rexx program has multiple Ps or PDS(Member) then variables should be shared using call instruction