| Acronym | Meaning |
| DID | Direct Inward Dialing |
| ROFL | Rolling On Floor, Laughing |
| PRL | Packetized Residential Lifeline |
| PIO | Programmed Input Output |
| SMIL | Synchronized Multimedia Integration Language |
| PIP | Peripheral Interchange Program |
| AARP | AppleTalk Address Resolution Protocol |
| RTF | Rich Text Format |
| MILNET | Military Network |
| HPAS | Hypermedia Presentation And Authoring System |