| Acronym | Meaning |
 | FDF | Flight Data File |
| FSGS | Flare/Shallow Glide Slope |
| IPS | IRL Initiating Reference Letter |
| DRO | Document Release Order |
| SAMTO | Space And Missi E Test Organization (VAFE3) |
| OPIS | Orbiter Prime Item Specification |
| TG | Ground Systems |
| ESS | Experiment Subsystem Simulator |
| TOO | Threshold Of Odor |
| HOLC | High Order Language Computer |
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