| 1. | .fl | Sound (Floating format) (hardware dependant not transportable) |
| 2. | .fla | Movie (Macromedia Flash) |
| 3. | .flb | Format library (Papyrus) ◊ Label (FileMaker Pro) |
| 4. | .flc | Animation (AutoDesk FLIC format) (Autodesk Animator) |
| 5. | .fld | Field define module file (3-D Fassade Plus) ◊ Folder (Charisma) |
| 6. | .flf | Delivered form (Corel Paradox) ◊ Driver (OS/2) ◊ License file (Navison Financials) |
| 7. | .fli | Animation (AutoDesk FLIC format) (Autodesk Animator) ◊ Tex font library (EmTeX) |
| 8. | .flic | Animation (AutoDesk FLIC format) (Autodesk Animator) |
| 9. | .fll | Distributable dynamic link library (DLL) (Microsoft Visual FoxPro) ◊ Drawing (iGrafx Designer) |
| 10. | .flm | Film Roll (AutoCAD/AutoShade) |
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