| Acronym | Meaning |
| FPE | Functional Program Element |
| HFC | Hydraulic Flight Control |
| EGC | Experiments Ground Computer |
| ED | Edit |
| IVBC | Integrated Vehicle Baseline Config |
| PID | Program Information Document |
| RESVR | Reservoir |
| M | PTSMultipurpose Tool Set |
| FM | Frequency Modulation (Modulated) |
| FP | Freezing Point |