The Systems Application Architecture® (SAA) definitions of software interfaces, conventions, and protocols provide a framework for designing and developing applications that are consistent within and across several operating systems. SAA REXX is a subset of the REXX language supported by the interpreter under TSO/E and can be used in this operating environment.

To help you write programs for use in all SAA environments, the Compiler can optionally check for SAA compliance. With this option in effect, an attention message is issued for each non-SAA item found in a program.

For more information, see IBM® Compiler for REXX/370: Introducing the Next Step in REXX Programming.