| Acronym | Meaning |
| S/C | Sensor/Controller |
| EVVA | Extravehicular Visor Assembly |
| DL | Downlink |
| GM | Gaseous Mixture |
| ESS | Effective Sunset |
| SCD | Specification Control Drawing |
| FEMCPL | Facilities And Envir- Measurement Comp. Parts List |
| SIE | Shuttle Interface Equipment Services |
| S | Side |
| DDC | Defense Documentation Center |