c $BDA5 Displays UDG's A-D
C $BDA5 open channel 2
C $BDAA ???  RRCA / LD A,(BC) == $0F / $0A == (15,10) ???
C $BDAE call GET_LC (law / chaos level?) which "does stuff" to B and C
C $BDB1 print "AT" B (line), C (column)
C $BDB8 print UDG "A", UDG "B"
C $BDBE increment y-coordinate
C $BDBF print "AT" B (line), C (column)
C $BDC6 print UDG "C", "D"
C $BDCC ???  RRCA / LD A,(BC) == $0F / $0A == (15,10) ???