Basic mapping support

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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