Describes the use of input message segment and field exits and data capture exits in the context of an IMS application.
Note: Exit routines load and execute in the application address space, effectively becoming part of the application. For example, if 10 active applications, each executing in MPRs, or with JES initiators, etc. and each calling the same exit routine, results in 10 active copies of the same exit routine. These exit routines do not share memory with each other, and execute fully isolated from each other.
