| Acronym | Meaning |
| ECP | Engineering Change Proposal |
| DCM | Display And Control Module |
| PDAR | Program Description And Requirements |
| SSRN | System Software Reference Number |
| FOP | Follow On Production |
| R&P | Reserve And Process |
| TSGP | Test Sequence Generator Program (ESTEC) |
| N | North |
| DTPR | Detailed Test Procedures |
| GSO | Ground Systems Operations |