| Acronym | Meaning |
| SIBIZMIR | Siberian Institute Of Terrestrial Magnetism |
| DSA | Directory System Agent |
| NSWP | National Space Weather Program |
| ADV | Atmospheric Dump Valve |
| DEC | Digital Equipment Corporation |
| PIXE | Proton Induced X-ray Emission |
| FAPS | Freedom Attached Payloads |
| AFP | Apple File Protocol |
| BEST | Black Educational Science Trust |
| DECMAIL | An Electronic Mail Facility Provided By DEC |