Corresponds to whether the player has already seen the image for the following rooms:

Bit	Room ID	Room Name
0	5	The Great Valley
1	15	At the Woodman's Hut
2	24	The Old Well
3	68	At the Base of a Volcano
4	60	At the Witch's Hovel
5	17	A Burned out Farm
6	35	The Enchanted Wood
7	36	The Enchanted Wood

Bit	Room ID	Room Name
0	37	The Enchanted Wood
1	76	The Dungeon
2	53	Marl's Gateway
3	70	The Cavern of Silence
4	N/A	N/A
5	N/A	N/A
6	N/A	N/A
7	N/A	N/A

Handler_DisplayRoom tests and sets the bit for the current room. The bit number is the room's place in 59398.