| Acronym | Meaning |
| IAS | Impact Assessment Sheet |
| RT | Receiver-Transmitter |
| STRUC | Structure |
| IOQE | Input/Output C)ueue Element |
| SMTAS | Shuttle Model Test And Analysis System |
| EC | Events Controller |
| BP | C/PCold Plate |
| BCRD | Basic Consolidated Requirements Document |
| RICC | Remote Intercomputer Communications Interface |
| ANSI | American National Standard Institute |