| Acronym | Meaning |
| MI | Mechanical Joint |
| GLP | Goal Language Processor |
| PEG | Powered Explicit Guidance |
| DCS | Display And Control System |
| OMPT | Observed Mass Point Trajectory |
| HSC | Hardware/Software Coordination |
| EM | Emergency |
| SLN | ERNO SPacelab Payload |
| BRCS | Basic Reference Coordinate System |
| CLS | Contingency Landing Site(s) |