GDDM-REXX enables you to run GDDM in EXECs written for the VM/System
   Product Interpreter, or the TSO/E Language Processor, using the
   Restructured Extended Executor Language - REXX.

• REXX statements
• CMS or TSO commands
• GDDM-REXX commands, subcommands, and utilities
• GDDM calls.

Subtopics:

• 6.1 GDDM-REXX commands, subcommands, and utilities
• 6.2 GDDMREXX command
• 6.3 GXGET subcommand
• 6.4 GXSET subcommand
• 6.5 GDDM calls
• 6.6 ERXMSVAR EXEC