| Acronym | Meaning |
 | LONG | Longitude |
| S/C | Stabilization And Control |
| CTSD | Coordinate Transformation SYstem |
| CVT | Concept Verification Testing |
| HORIZ | Horizon |
| CWS | Caution And Warning Status |
| IOB | InPut/Output Buffer (if Bus |
| PCS | Payload Control Supervisor |
| DRF | DocumentationRequisitionForm |
| CS | Common Set |
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