| Acronym | Meaning |
| IG | Igloo |
| SAM | SAMSShuttle Attachment ManiPulator SYstem |
| ESRO | European Space Research Organization |
| TO | Operations Management (TS) |
| D&CS | Display And Controls Subsystem |
| OPSB | Orbiter Processing SuPport Building |
| TAR | Test Action Requirement |
| HS-C | Hamilton Standard CO Absorbent Material |
| RJC | Reaction Jet Control |
| SRCBD | Software Requirements Change Board Directive |