| Acronym | Meaning |
 | K-SLM | KSC Spacelab Plan/Requirement |
| M | LGS Microwave Landing Guidance System |
| LW | Launch Window |
| SEM | Seller's Engineering Memo |
| SCF | Spacecraft Control Facility |
| PMEL | Precision Measurements Equipment Laboratory |
| PB | Phonetically Balanced |
| P/PL | Primary Payload |
| SDN | Software Development Note |
| MGA | Middle Gimbal Angle |
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