Components of REXX

The various components of REXX make it a powerful tool for programmers. REXX is made up of:
  • Clauses, which can be instructions, null clauses, or labels. Instructions can be:
    • Keyword instructions
    • Assignments
    • Commands (REXX/CICS and CICS commands and SQL).
    The language processor processes keyword instructions and assignments.
  • Built-in functions — These functions are built into the language processor and provide convenient processing options.
  • External functions — REXX/CICS provides these functions that interact with the system to do specific tasks for REXX.
  • Data stack functions — A data stack can store data for I/O and other types of processing.

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Timestamp icon Last updated: Tuesday, 7 January 2014


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