| Acronym | Meaning |
 | RPG | Role-Playing Game |
| ODI | Open Data-link Interface |
| T3 | T-Three - Carrier Signal (communications) |
| DB | Database |
| APA | All Points Addressable |
| NSFNET | National Science Foundation Network |
| DIF | Data Interchange Format |
| MICR | Magnetic Ink Character Recognition (Reader) |
| ANSI | American National Standards Institute |
| IPSEC | Internet Protocol Security |
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