| Acronym | Meaning |
 | GSS | Ground Support Software |
| MEB | Main Electronics Box |
| SSID | Shuttle Stowage Installation Drawing |
| OSHA | Occupational Safety And Health Act (Activity) |
| CLC | Change Letter Control |
| JED | Julian Ephemeris Data |
| OP | Open |
| CDI | Course Deviation Indicator |
| GPME | General Purpose Mission Equipment |
| CB/DC | Circuit Breaker (dc Only) |
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