| Acronym | Meaning |
| STAT | Statistics |
| SPLX | Simplex |
| EXT | Experiment Terminal (Operator Console On Spacelab) |
| IVC | Intervehicular Communications |
| NBF | Neutral Buoyancy Facility |
| ERO | Engineering Release Operations |
| DISCH | Discharge |
| OS | Operating System |
| ECN | Engineering Change Notice |
| HDRM | High Data Rate Multiplexer |