TSO/E supplies many subcommands for the TEST command, and many commands that can be invoked under TEST. If you need additional testing functions, you can write your own command processors or subcommand processors for use with TEST. You must first write the command or subcommand processor itself, and then define it to the TEST command.

describes how to write a command processor or subcommand processor. To write a command processor to be invoked under TEST, follow the general procedures in that document; there are no special procedures. To write a subcommand of TEST, however, you must follow the special procedures described below in Writing a subcommand of TEST.