If your application will be run in session mode,
you can include a subsystem break routine that allows a user running
the program interactively to interrupt a task being performed by
the program. To provide this capability you must include calls to
a number of system intrinsics and supply a special subroutine that
will run when subsystem break is invoked.
This chapter describes the process of implementing a subsystem
break handler in your program. It includes discussions of the following:
Intrinsics required to enable and
perform subsystem break processing.
Intrinsics that control how subsystem break processing
occurs.
Sample procedures demonstrating the use of these
intrinsics.
Additional considerations for allowing subsystem
break in a program.
