| Acronym | Meaning |
 | SM | ESShuttle Mission Evaluation Simulation (Simulator) |
| TACO | Test And Checkout Operations |
| PID | Program Information Document |
| ECO | Engineering Change Order |
| HS | High Speed |
| SCOE | Special Checkout Equipment |
| MDS | Master Development Schedule |
| PDM | Pulse Duration Modulation |
| SHERB | Sandia Human Error Rate Bank |
| PF | Pulse Frequency |
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