What We're Talking About...

• The REXX language is designed to be extended through additional functions -- written either in REXX or in another programming language; when the functions are written in another language, they are collected into function libraries

• An external REXX library must be registered before the contained functions can be used; this is the general syntax needed to register a library:
  Call RxFuncAdd 'SysLoadFuncs','RexxUtil','SysLoadFuncs' Call SysLoadFuncs
• The previous presentation reviewed the history of the REXX language, examined the nature of functions, and presented a quick overview of "built-in" functions in the standard REXX implementation.

• In this presentation, we look at three function libraries and how these extend REXX. We will examine:

  • Extending REXX for free -- IBM's REXXUTIL

  • Extending REXX in one direction -- Quercus Systems REXXLIB

  • Extending REXX in another Direction -- SofTouch Systems Rexx SuperSet/2

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