| 44D9 | LoneObject | 1 if a lone-object was given last input |
| 45AD | NounDataSize | Number of bytes in noun's data area |
| 45AE | DecodeEmpty | 1 if something was decoded from input |
| 45AF:45B0 | NounData | Pointer to noun data |
| 465F:4660 | InputBuffer | 32 byte input buffer |
| 4680 | InputNoun | The user input noun |
| 4681 | InputVerb | The user input verb |
| 4682 | GrammarType | The phrase's grammar type |
| 4683 | InputEntroy | Running counter ... never used |
| 4684:4685 | NextWord | Pointer to next word while parsing |
| 4686 | WordSize | Character counter in word parsing |
| 4687 | CurrentWord | Current word data |
| 468A:468B | PtrHold | Input pointer hold (never used) |
| 468C:46B9 | Stack | Stack space |
| 477E | Unpack1 | RAM used by unpack routine |
| 477F | Unpack2 | RAM used by unpack routine |
| 4780 | Unpack3 | RAM used by unpack routine |
| 4781 | Unpack4 | RAM used by unpack routine |
| 492F | CurrentRoom | Player's current room number |
