| Acronym | Meaning |
 | PSAC | Presidential Scientific Advisory Committee |
| OIB | Orbiter Interface Box |
| FSS | Flight Support Station (for MMU) |
| MEP | Main Entry Point |
| SOPC | Shuttle Operations And Planning Center |
| MA | Maintenance (STS) |
| ORTHOG | Orthogonal |
| EVCON | Events Control (Subsystem) |
| TMF | Transporter Maintenance Facility |
| OPTB | Opposite |
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