+27Apr20=======================================================================
+1. Start recording IP addresses that users are using both in the user file
+ and in the routing table. The IP addresses come from PC92 A records and
+ also from PC61 spot records.
+2. Use this information to work backwards to, for instance, put an IP address
+ on a spot that came in on a PC11 before any PC61 or PC62 A arrived. That
+ IP address may be on a PC61 for a different spot that had come previously.
+3. Show which debugging category triggered any debug output. Debug output
+ that was not trigger, but just output (e.g. the startup stuff) has no
+ category.
25Apr20=======================================================================
1. Add maximum no of users on node to show/cluster.
2. Add ability to show last n lines of debugging ring buffer.