You can specify run-time options as parameters passed to the program initialization routine. You can also specify run-time options in the PLIXOPT variable. It might also prove beneficial, from a performance standpoint, if you alter your existing programs by using the PLIXOPT variable to specify your run-time options and recompiling your programs. For a description of using PLIXOPT, see z/OS Language Environment Programming Guide.
To simplify input/output at the terminal, various conventions have been adopted for stream files that are assigned to the terminal. Three areas are affected: