The REXX/imc Tutorial

Introductory text

Note: some of the information in this file is system-specific, though most of it pertains to every implementation of Rexx. Lines containing implementation-specific information are flagged with letters in column 1. The letter "I" denotes information for REXX/imc. I have also started adding information about OS/2 Rexx, which will be flagged with "O" in column 1. I hope it is not too confusing to see some sections written twice, once for each system. The file is designed so that if you run it through "egrep '^(x| |$)'|cut -c3-" (where x is the desired letter) then it should still make sense and cut out the flag letters. Doing this will select one of the following lines indicating which system was selected; the characters to the left of this paragraph will make sure it gets deleted when that happens.

I This file describes REXX/imc.
O This file describes OS/2 Classic Rexx (which is also pretty much compatible with the OS/2 Object Rexx interpreter).

I More advanced information can be found in rexx.summary (bare details of each command and builtin function, with a list of differences from standard Rexx) and rexx.ref (technical details of every aspect of this Rexx implementation).
O More information is available in the OS/2 help system. For example, typing "help rexx signal" will give the syntax of the Rexx "signal" instruction.