| Acronym | Meaning |
| LCL | Local |
| HIP | Hardware Interface Program |
| SL-SSS | Spacelab Subsystem(s) Segment |
| FIFO | First In-First Out (High Speed Data Buffers) |
| MTK | Mechanical Time Keeping |
| OM | RS Operations And Maintenance Requirements Specification |
| CRR | Computer Run Report |
| VAK | Vertical Access Kit |
| ECOS | Experiment Computer Operating System |
| TB | Time Base |