.S F=N
.S N=91
.!LOOK
.!HERE
!LOOK
.!CLRT
.P "You are at a branch in the tunnel.
.I F:91
.T P "Passages go to the left, right,
.I F:92
.T P "Passages go forward, to the right,
.I F:90
.T P "Passages go forward, to the left,
.P "and back behind you.
%L...
.!CLRT
.I F#92
.T J +3
.!INVD
!!!!!
.P "You turn down the left passage.
.I F:90
.T !GTO1
.I F:91
.T !GTO2
.!TUNL
%R...
.!CLRT
.I F#90
.T J +3
.!INVD
!!!!!
.P "You turn down the right passage.
.I F:91
.T !GTO0
.I F:92
.T !GTO1
.!TUNL
%FW..
.!CLRT
.I F#91
.T J +3
.!INVD
!!!!!
.P "You continue forward.
.I F:90
.T !GTO2
.I F:92
.T !GTO0
.!TUNL
%BK..
.!CLRT
.P "You turn around and trudge back down
.P "the passage.
.I F:90
.T !GTO0
.I F:91
.T !GTO1
.I F:92
.T !GTO2
.!TUNL
!GTO0
.3 ROOM 30.0 
.S GE(6)=17
!GTO1
.3 ROOM 30.1 
.S GE(6)=102
!GTO2
.3 ROOM 30.2 
.S GE(6)=7
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