| Acronym | Meaning |
| DPP | Deployment Pointing Panels |
| EKG | Electrocardiograph (Instrument) |
| TTC | Tunnel Thermal Control |
| IPS | I RTCMIntegrated Real-Time Contamination Monitor |
| IMDB | Integrated Maintenance Data Base |
| RDF | Resource Data File |
| ALAE | Atmospheric Lyman Alpha Experiment |
| RCY | Remaining CYcles |
| RFEI | Request For Engineering Information |
| OGS | Oxygen Generation System |