Description

   The SPAWN command can be used to either issue a single DCL
   command from within PMDF QM or to leave PMDF QM temporarily, do
   other work (e.g., type out a file, generate a directory listing,
   etc.), and then return to PMDF QM.

   By default, the context of the current process is copied to the
   subprocess. This behavior can be controlled with the /LOGICAL_
   NAMES and /SYMBOLS qualifiers.