To invoke ISPF services for a command invocation, use either:

• The ISPEXEC command in a command invocation written in CLIST or REXX
• Option 7.6 of ISPF, the Dialog Services option of the Dialog Test facility.

These services are not available using the ISPEXEC call from a command procedure:

GRERROR   VCOPY     VMASK
GRINIT    VDEFINE   VREPLACE
GRTERM    VDELETE   VRESET

These services are available by using the CALL from programs.