| Acronym | Meaning |
 | TDD | Task Description Document |
| ERO | Engineering Release Operations |
| R&Z | Range And Zero |
| MSC | Manned Spacecraft Center (changed To JSC) |
| MDM | Multiplexer/demultiplexer |
| BN | Ballistic Number |
| HDRR | High-data-rate Recorder |
| MELI | Master Equipment List Index |
| HF | Hyperfiltration |
| DAL | Data Accession List |
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