cmSysCommand is a read-write control point whose enumerated values (none, readConfig, saveConfig, restart, takeover, relinquish) let a management station issue a system-level action, while a GET simply reports the last command that was issued rather than a live status. Administrators use it to remotely trigger housekeeping tasks like reloading or saving the running configuration, or forcing a restart, without needing console access to the System Control Module. For example, after changing several shelf parameters an operator would SET cmSysCommand to saveConfig(3) to persist the changes, then later SET it to restart(4) to reboot the system and apply them.