| Acronym | Meaning |
 | IITCS | Igloo Internal Thermal Control Section |
| HMP | Hydrozene Monopropeflant (RCS Propellant) |
| GPH | Gallons Per Hour |
| PCO | Postcheckout |
| CI | Crew Interface |
| ACRIM | Active Cavity Radiometer Irradiance Monitor |
| CL | Closed Loop Contro! Logic |
| MDF | Manipulator Development Facility |
| VFM | View Finder Monitor |
| MECF | Main Engine Computational Facilities |
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