.S F=N
.S N=104
.!LOOK
.!HERE
!LOOK
.!CLRT
.P "You are at a branch in the tunnel.
.I F:104
.T P "Passages go to the left, right,
.I F:102
.T P "Passages go forward, to the right,
.P "and back behind you.
%L...
.!CLRT
.I F#102
.T J +3
.!INVD
!!!!!
.P "You turn down the left passage.
.!GTO2
.!TUNL
%R...
.!CLRT
.P "You turn down the right passage.
.I F:102
.T !GTO4
.I F:104
.T S GE(6)=19
.!TUNL
%FW..
.!CLRT
.I F#104
.T J +3
.!INVD
!!!!!
.P "You continue forward.
.S GE(6)=19
.!TUNL
%BK..
.!CLRT
.P "You turn around and trudge back down
.P "the passage.
.I F:102
.T !GTO2
.I F:104
.T !GTO4
.!TUNL
!GTO2
.3 ROOM 44.2 
.S GE(6)=2
!GTO4
.3 ROOM 44.4 
.S GE(6)=102
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