$XABPRO_STORE

   The $XABPRO_STORE macro moves user-specified values into fields
   of the specified XABPRO. The expanded $XABPRO_STORE code executes
   at run time on a previously initialized (allocated) XABPRO, in
   contrast to the $XABPRO macro, which initializes a XABPRO at
   assembly time. The $XABPRO_STORE macro must reside in a code
   program section.

   Format

     $XABPRO_STORE  XAB=xabpro-address,

                    ACLBUF=ACL-buffer-address,

                    ACLCTX=#<ACL-context>,

                    ACLSIZ=#ACL-buffer-size,

                    MTACC=#magnetic-tape-accessibility,

                    NXT=next-xab-address,

                    PRO=<system, owner, group, world>,

                    PROT_OPT=<PROPAGATE>,

                    UIC=#uic-value