$FAB_STORE

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

   Format

     $FAB_STORE  fab=fab-address,

                 ALQ=#allocation-quantity,

                 BKS=#bucket-size,

                 BLS=#block-size,

                 CHAN_MODE=#channel-access-mode

                 CTX=user-context-value,

                 DEQ=#extension-quantity,

                 DNA=default-filespec-address,

                 DNS=#default-filespec-string-size,

                 FAC=<BIO BRO DEL GET PUT TRN UPD>,

                 FNA=filespec-string-address,

                 FNS=#filespec-string-size,

                 FOP=<CBT CIF CTG DFW DLT MXV NAM NEF NFS OFP POS

                 RCK RWC RWO SCF SPL SQO SUP TEF TMD TMP UFO WCK>,

                 FSZ=#header-size,

                 GBC=#global-buffer-count,

                 LNM_MODE=#logical-name-translation-access-mode,

                 MRN=#maximum-record-number,

                 MRS=#maximum-record-size,

                 NAM=nam-address,

                 ORG={IDX|REL|SEQ},

                 RAT=<BLK{CR|FTN|PRN}>,

                 RFM={FIX|STM|STMCR|STMLF|UDF|VAR|VFC},

                 RTV=#window-size,

                 SHR=<DEL GET MSE NIL PUT UPD UPI NQL>,

                 XAB=xab-address