The "split" format is for a separating the gui from the main program. The main program can be installed setuid, and you don't want to link a gui-library with a setuid program. The split format is: The "raw" format is: hostline|pingline|dnsline|timestampline hostline: h pingline: p dnsline: d timestampline: t Timestampline is not yet implemented. Need to find out how to do ICMP timestamping first. :-)