Extraction from "ftp://ftp.pvv.unit.no/pub/regina/comp.lang.rexx/FAQ.ascii"
The last paragraph is a very true fact regarding AmigaOS
today. All major applications, of all categories does REXX.
A. What Is REXX?
REXX is a programming language designed by Michael Cowlishaw
of IBM UK Laboratories. In his own words: "REXX is a
procedural language that allows programs and algorithms to
be written in a clear and structured way."
REXX doesn't look that different from any other procedural
language. Here's a simple REXX program:
/* Count some numbers */
do i = 1 to 10
say "Number" i
What makes REXX different from most other languages is that
it is also designed to be used as a macro language by
arbitrary application programs. The idea is that
application developers don't have to design their own macro
languages and interpreters. Instead they use REXX as the
macro language and support the REXX programming interface.
If a REXX macro comes across an expression or function call
that it cannot resolve, it can ask the application to handle
it instead. The application only has to support the
features that are specific to it, freeing the developer from
handling the mundane (and time-consuming) task of writing a
language interpreter. And if all applications use REXX as
their macro language, the user only has to learn one
language instead of a dozen.
Last update: Jun 27 1997 at 12:05, by Hannu Nevalainen