IBM SC34-5764-01 - Manual (Page 363)

EXEC
EXEC execid args
EXEC calls a REXX exec at a lower level (as a nested exec). All variables for this new exec are kept
separate from the higher level exec, which is suspended until the nested exec ends.
Operands
execid
specifies the 1 to 17 character identifier of the exec.
args
specifies the argument string being passed to the called exec.
Return Codes
n specifies the return code set by the exit of the called exec
0 Normal return
-3 Exec not found
-10 Exec name not specified
-11 Invalid exec name
-12 GETMAIN error
-99 Internal error
Example
'EXEC ABC'
This example executes exec ABC.EXEC.
Commands
Chapter 25. REXX/CICS Commands 341