User-designed functions written in assembler language can send data to the OPS/REXX external data queue using the standard TSO/E REXX IRXSTK service. You can get the address of the REXX stack service routine from the EXTE pointed to by the environment block (register 0 on entry to the function). QUEUE is the only supported function.
For more information on the stack service, see the IBM documentation.
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