Workspace filled from Default_Table_ItemLocations by the routine at GameStart. Object locations occupy the 65 bytes at Table_ItemLocations. The current room is *CurrentRoom. Pointers to the message, exit and handler tables follow the command buffer.

Bit 0 is set when a room picture is waiting for a keypress.

One bit per entry in Table_RoomsWithImages. Handler_DisplayRoom tests and sets the bit for the current room's picture slot.

Holds a single byte, where each bit relates to a turn-based event. When the bit is set, HandlerTurnBasedEvents runs the matching handler from Table_TurnBasedEventHandlers.

One countdown per bit of *Flag_TurnBasedEventState.

Holds a single byte, where each set bit arms a scenic event. Handler_ScenicEvents walks these bits and plants a message when the player is not already in that event's room from Table_ScenicEventLocations.

The room the player starts the game in is room 0: N/A.

Where each of the 8 scenic events is. Handler_ScenicEvents compares these rooms with *CurrentRoom.

The number of items the player is currently holding.

When loading or saving, this buffer holds the bytes for the saved-location pointers at Table_SavedLocations.

The line being typed. Parsed word tokens follow at UserInput_FirstToken.

The vocabulary number of each word of the last command, in the order they were typed, with 255 in every slot that isn't used.

The text and picture row used when clearing lines and parking the cursor.

Pointer to the table containing the game vocabulary.

The four-character word the parser is matching.

Handler addresses for each bit of *Flag_TurnBasedEventState. Used by HandlerTurnBasedEvents.

Pointers to the message lists Handler_ScenicEvents walks for each scenic event.

Pointer to the table containing the relationships between rooms.

The total number of objects in the game.

Pointer to the table containing item descriptions.

The total number of noun word tokens the game has.

The total number of rooms which have related images in the game.

Pointer to the table containing all the rooms which have an image to display.

Pointer to the jump table for displaying an image relating to a room.

Pointer to the table containing room descriptions.

The total number of verb word tokens the game has.

Pointers to the direction names, in the order north, south, east, west, up and down.

65 pointers to the object messages. Indexed with the count stored at *Count_Objects.

One pointer per room. Room 0 and room 1 are unused. The starting room is 2, In Deep Space, On Patrol.

37 pointers to the noun phrases the parser matches.

Six direction bytes for every room, in the order north, south, east, west, up and down. 0 means no exit.

Pointers copied and restored with the save file. The count is stored at *Count_SavedLocations.

Used by the routine at RecolourRoomImage.

Attribute-file addresses that RecolourRoomImage blanks after it paints a recoloured copy of Image_TheWhiteRoom. 71 words.

The starting values for the game status buffer. GameStart copies all 309 bytes over Table_ItemLocations at the start of every game, so the layout is the same as the entries from Table_ItemLocations to Pointer_SavedLocations.

Copied to Flag_DisplayState. Bit 0 is clear at the start of every game.

Copied to Table_RoomImagesAlreadySeen. No room picture has been shown yet.

Copied to Flag_TurnBasedEventState. No turn-based event has started.

Copied to Counter_Unused_0. One countdown per bit of *Flag_TurnBasedEventState.

Copied to Flag_ScenicEventState. No scenic event is armed yet.

Copied to CurrentRoom. The player starts in room 2.

Copied to Table_ScenicEventLocations. Where each of the 8 scenic events starts.

Copied to Count_InventoryItems. The player starts holding 1 item(s).

Copied to LoadSaveBuffer. Initial bytes for the saved-location pointers.

Copied to CommandBuffer. Cleared again when a command is typed.

Copied to UserInput_FirstToken. Filled with 255 until a command is parsed.

Copied to LineNumber. Initial text/picture row 24.

Copied to Pointer_Vocabulary. Points at the vocabulary table.

Copied to FourLetterBuffer. Cleared again when a word is matched.

Copied to Table_TurnBasedEventHandlers. Handler addresses for each turn-based event bit.

Copied to Table_ScenicEventMessageLists. Message-list pointers for each scenic event.

Copied to Pointer_RoomMap.

Copied to Count_Objects.

Copied to Pointer_ItemDescriptions.

Copied to Count_Nouns.

Copied to Count_RoomsWithImages.

Copied to Pointer_RoomsWithImages.

Copied to Pointer_RoomImage.

Copied to Pointer_RoomDescriptions.

Copied to Pointer_ObjectNounPhrases.

Copied to Pointer_ObjectList.

Copied to Pointer_NounTokens.

Copied to Pointer_JumpTable_Verbs.

Copied to Count_VerbTokens.

Copied to Count_SavedLocations.

Copied to Pointer_SavedLocations.

Verb routines in the same order as the search list at Table_VerbSearchList. Used by Handler_DispatchVerb.

Handlers that draw the location pictures, in the same order as the room list at Table_RoomsWithImages.

Used by the routine at Handler_DisplayRoom through the pointer at Pointer_RoomImage, set from Default_Table_ItemLocations.