"Region Test"

Able is a region.
Room A, Room B, Room C and Room D are rooms in Able.
Baker is a region.
Room E, Room F, and Room G are dark rooms in Baker.

Charlie is a region.
Room H, Room I, and  Room J are rooms in Charlie.

Delta is a region.
Room K and Room L are dark rooms in Delta.
Room A is a Room.
Room A is south of Room L.
Room B is east of Room A.
Room C is east of Room B.
Room D is east of Room C.
Room E is north of Room D.
Room F is north of Room E.
Room G is north of Room F.
Room H is west of Room G.
Room I is west of Room H.
Room J is west of Room I.
Room K is south of Room J.
Room L is south of Room K.
the player is carrying a switched off device called a flashlight.
the flashlight can be either lit or unlit.
understand "flash" or "light" as flashlight.

instead of switching on the flashlight when the flashlight is not lit:
now the flashlight is lit;
now the flashlight is switched on;
say "you turn on the flashlight.";
stop the action.

instead of switching off the flashlight when the flashlight is lit:
now the flashlight is unlit;
now the flashlight is switched off;
say "you turn off the flashlight.";
stop the action.

instead of dropping the flashlight,
say "Better not do that! You'll need it.".