verb

A single word (like ISERVE) telling the operating system that ISERVE should process this command. Define verb with the COMMAND initialization parameter. When running both primary and secondary ISERVEs, assign a different command verb to each to prevent multiple ISERVEs from processing the same command.

identifier

Name of the started task (or JOBNAME), or the optional identifier specified in the MVS START command that started the CA‑GSS address space.

command

Command that you are issuing.

parameters

Parameters that you are passing to the command.