Make sure the Exec starts with the /* REXX */ comment.

TSO EXEC 'hlq.your.dsn(member)' runs Rexx in exactly the

same way as it would a CLIST.

TSO EX yourlib(member) E uses a suffix of EXEC and the TSO

profile prefix to form a full DSN

of 'your_prefix.yourlib.EXEC(member)'

The SYSEXEC concatenation can be used to run execs using

TSO execname. The SYSPROC concatenation will do just as

well, but is really intended for CLISTS.

TSO %execname parameter_string allows you to pass a

parameter string to the exec, note that this string is only

a single argument, not multiple arguments as can be used

when calling from within an exec. The '%' instructs TSO to

not use loadlib concatenations when constructing the search

path.

For running Rexx in batch:

Create a batch environment for the Exec to run in with

PGM=IRXJCL, PGM=IKJEFT01 or PGM=IKJEFT1B

IRXJCL is a straight batch environment

IKJEFT01 and IKJEFT1B are the TSO in batch programs.

Put the Rexx exec libraries in the SYSEXEC DD

concatenation.

Call your exec via the PARM='yourprog' or as input in the

SYSTSIN DD