| Acronym | Meaning |
| SLS | Spacelab Simulator |
| ECR | Engineering Change Request |
| VL | Expendable Vehicles (KSC VO Dir.) |
| EI | Entry Interface |
| BARS | Baseline Accounting And Reporting System |
| CSPU | Coi-e Segment Processing Unit |
| SAS | Stimuli Analog Refresh Table |
| SM | SOft Manual |
| NMO | Normal Manual Operation |
| SIN | Sine |