I don't know. PL/I is an old (at least 20 years old) mainfram
language. It reminds me more of C if you can imagine every C catalog
function being included in the language itself. The subset most people
used is Subset G and it contains functions that you wouldn't believe.
However it is a very powerful language and runs very fast. Everything
in it is a procedure, but that is also true of C. If you make certain
programming errors, PL/I will try to correct them with usually
astonishing results. I always liked it much better than C or Pascal. I
have not done any real programming in REXX so I'm not qualified to make
any comparison there.       Best,        Jake
--- Maximus/2 2.01wb