# JMRI: MRC Command Monitor

This is the package/jmri/jmrix/mrc/swing/monitor/MrcMonPanel.shtml package help file.

Include Poll Messages - When enabled you will see the messages as each cab on the network is polled by the command station. This is a lot of traffic and generally shows that nothing meaningful is happening. It is useful to confirm that a cab is being polled and if the cab is responding.