No subject

-0  primary fixed and message capable station
-1  digis and other fixed stations
-2  digis and other fixed stations
-3  digis and other fixed stations
-4  digis and other fixed stations
-5  TBD <= maybe Dstar/Echolink/phones/Ipads etc
-6  Satellite, special events, tests  
-7  HT's, walkie talkies or any human portable
-8  boats, sailboats OR second vehicle
-9  primary Mobiles of all types
-10 operations via the internet (Igates)
-11 balloons and aircraft
-12 DTMF, RFID, or other non-APRS sources  
-13 TBD <== Weather has been suggested)
-14 Truckers and full time drivers
-15 HF <== Lets expand to GENERIC ANYTHING ELSE

There will ALWAYS BE EXCEPTIONS.  So please to not try to force these on anyone, but if they otherwise open to using one of these categories, it will help everyone in situational awareness when a callsign flashes up on the display or is SPOKEN by your hands-off D700 with voice chip.

Bob, WB4APR