| Acronym | Meaning |
 | ASCII | American Standard Code For Information Interchange |
| DDU | Decommutator Distribution Unit |
| OA | Output Axis |
| DECL | Direct Energy Conversion Laboratory (JSC) |
| FML | Final Materials List |
| GSI | Government Source Inspection |
| PTS | Payload Test Set |
| GS | Ground System |
| SCO | Switch Closure Out |
| CPCL | Computer Program Change Library |
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