Basic mapping support (BMS) allows the CICS® application
programmer to have access to input and output data streams without
including device-dependent code in the CICS application program.
BMS provides the following services:
- Message routing
- This allows application programs to send output messages to
one or more terminals not in direct control of the transaction.
- Terminal paging
- This allows the user to prepare a multipage output message without
regard to the physical size of the output terminal; the output can
then be retrieved by page number in any order.
- Device independence
- This allows the user to prepare output without regard to the
control characters required for a terminal; CICS automatically inserts
the control characters and eliminates trailing blanks from each line.
Most of the BMS programs are resident in the CICS nucleus.
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