| Acronym | Meaning |
 | RST | Recessed Selectromatic Terminal |
| EDU | Engineering DeveloPment Unit |
| SSPD | Shuttle System Payload Description |
| FSS | Fixed Service Structure |
| FHD | Fixed Head Disk |
| SMIR | Shuttle Multispectral Infrared Radiometer |
| SVC | Supervisor Call |
| SIS | Shuttle Interface Simulator |
| SAB | SACstrategic Air Command(USAF) |
| PETS | POCC Experiments Timeline System (GDSD And Spacelab |
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