- 1. Form Feed. The ASCII character 12 (decimal, or 0D hex). On text printers this would result in the current sheet being ejected. On text displays it would cause the display to be cleared (depending the equipment this might be the same as a clear-screen "cls", but might leave the cursor in a different place.)
- 2. FireFox. Abbreviation for the FireFox web browser.
- 3. Freeze Frame. To display display a single (still) frame of a video.