| Term | Meaning |
| AKA | “Also known as”. One of the FidoNet addresses of your board. You can have several. See AKA domains. |
| BinkP | The TCP protocol that FidoNet systems use to exchange mail and files. |
| Door | A program a caller runs from the BBS, usually a game. See Doors. |
| Echo | A message area or a file area shared between many boards. |
| EMSI | An older mail-session protocol, still understood by PBMailer. |
| FidoNet | A network of hobby BBSes that pass mail and files along. |
| Hudson, JAM, Squish | Three formats for message bases. v4 reads and writes all three. |
| Level | A number that decides what a user may do. |
| Login Guard | The part of PBDispatch that counts failed logins and bans addresses. See Login Guard. |
| Node | One caller's session, one ProBoard.exe. The board runs as many nodes as you set. |
| P3X | The extension of a v4 plug-in. See Plug-ins and the SDK. |
| PEX | The old 16-bit plug-in format. Not used in v4. |
| PBLink | ProBoard's own QWK network. See PBLink. |
| QWK | A packet format for offline mail. |
| Tosser / scanner | The program that files arrived mail into message bases (toss) and packs new mail for your links (scan). That is PBToss. |
| TIC | The small description file that comes with a file in a file echo. |
| Uplink / link | A system you exchange mail with. |