| Acronym | Meaning |
 | MN | Main |
| OPNS | Operational Phase |
| IPS | ISD Instructional Systems DeveloPment (USAF) |
| SSA | 1/0 GCOS Program Element Name |
| EDA | Electronic DisPlay Assembly |
| TER | Time Estimating Relationship |
| OMI | Operations And Maintenance Instruction |
| TCP | Test Checkout Procedure |
| OHA | Orbital Height Adjustment Maneuver |
| BOS | Backup Operating System |
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