way to tell what version of the client is running

list Paul Root
Thu, 30 May 2013 17:48:11 +0000
Message-Id: <user-27f0b56fde7a@xymon.invalid>

Hi,
                Is there a way from the server, to find out what version the client is running?

                I looked in the xymon command man page, but didn't find anything.

Paul.