You can produce a SAY output by using the IRXSAY vector. There is no difference between the WRITE and WRITERR functions. Under CA‑GSS, SAY output is treated in the same manner as that produced by the IMOD. By default, SAY output is printed in ISRVLOG. The IMOD can redirect SAY output to a stack (using the REDIRECT() function) or to a SYSOUT data set (using the SAYWHAT() function).
During function and ADDRESS execution, SAY output is accumulated in a work area. At the conclusion of the function or ADDRESS, the accumulated data is sent to the appropriate destination. If an abend occurs, the accumulated data may be lost.
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