Here is a list of all documented functions, variables, defines, enums, and typedefs with links to the documentation:

### - f -

- fh : saveload.cpp
- FileMD5() : gfxinit.cpp
- FileType : fios.h
- FillDrawPixelInfo() : gfx.cpp , gfx_func.h
- FinaliseHouseArray() : newgrf.cpp
- FinaliseIndustriesArray() : newgrf.cpp
- FIND_FIRST_BIT : bitmath_func.hpp
- FindCatchmentRadius() : station_cmd.cpp
- FindChildWindow() : window.cpp
- FindClosestTrainDepot() : train_cmd.cpp
- FindDeletableWindow() : window.cpp
- FindDeletedWaypointCloseTo() : waypoint.cpp
- FindFirstBit() : bitmath_func.cpp , bitmath_func.hpp
- FindFirstBit2x64() : bitmath_func.hpp
- FindFirstRefittableCargo() : vehicle.cpp
- FindFirstTrack() : track_func.h
- FindFirstTrackdir() : track_func.h
- FindLastBit() : bitmath_func.cpp , bitmath_func.hpp
- FindNearestHangar() : aircraft_cmd.cpp
- FindRoadStopSpot() : station_cmd.cpp
- FindStationsAroundIndustryTile() : station.h , station_cmd.cpp
- FindVehicleOnPos() : vehicle.cpp
- FindVehicleOnPosXY() : vehicle.cpp
- FindWindowFromPt() : window.cpp , window_gui.h
- FindWindowZPosition() : window_gui.h , window.cpp , window_func.h
- FioCheckFileExists() : fileio.cpp , fileio.h
- FioCreateDirectory() : fileio.cpp , fileio.h
- FioFCloseFile() : fileio.cpp , fileio.h
- FioFOpenFile() : fileio.cpp , fileio.h
- FiosAlloc() : fios.cpp , fios.h
- FiosFreeSavegameList() : fios.cpp , fios.h
- FiosGetDescText() : fios.cpp , fios.h
- FiosGetFileList() : fios.cpp
- FiosGetSavegameList() : fios.cpp , fios.h
- FiosGetSavegameListCallback() : fios.cpp , fios.h
- FiosGetScenarioList() : fios.cpp , fios.h
- FiosGetScenarioListCallback() : fios.cpp
- FIRST_GRF_SLOT : fios.h
- FixOldWaypoints() : waypoint.cpp , waypoint.h
- FixSlopes() : heightmap.cpp
- FlatEmptyWorld() : heightmap.cpp , heightmap.h
- FlatteningFoundation() : slope_func.h
- FLOOD_ACTIVE : water_cmd.cpp
- FLOOD_DRYUP : water_cmd.cpp
- FLOOD_NONE : water_cmd.cpp
- FLOOD_PASSIVE : water_cmd.cpp
- FloodHalftile() : rail_cmd.cpp , water.h
- FloodingBehaviour : water_cmd.cpp
- FloodVehicleProc() : water_cmd.cpp
- FloodVehicles() : water_cmd.cpp
- FOR_ALL_CARGOPACKETS : cargopacket.h
- FOR_ALL_CARGOPACKETS_FROM : cargopacket.h
- FOR_ALL_SEARCHPATHS : fileio.h
- FOR_ALL_TILES_IN_HEIGHT : tgp.cpp
- FOR_EACH_SET_BIT : bitmath_func.hpp
- ForceFindDeletableWindow() : window.cpp
- ForceReverse() : npf.cpp
- foreach_draw_tile_seq : sprite.h
- FormatStringLinebreaks() : gfx.cpp , gfx_func.h
- Foundation : slope_type.h
- FOUNDATION_HALFTILE_E : slope_type.h
- FOUNDATION_HALFTILE_N : slope_type.h
- FOUNDATION_HALFTILE_S : slope_type.h
- FOUNDATION_HALFTILE_W : slope_type.h
- FOUNDATION_INCLINED_X : slope_type.h
- FOUNDATION_INCLINED_Y : slope_type.h
- FOUNDATION_INVALID : slope_type.h
- FOUNDATION_LEVELED : slope_type.h
- FOUNDATION_NONE : slope_type.h
- FOUNDATION_PART_HALFTILE : viewport.cpp
- FOUNDATION_PART_NONE : viewport.cpp
- FOUNDATION_PART_NORMAL : viewport.cpp
- FOUNDATION_RAIL_E : slope_type.h
- FOUNDATION_RAIL_N : slope_type.h
- FOUNDATION_RAIL_S : slope_type.h
- FOUNDATION_RAIL_W : slope_type.h
- FOUNDATION_STEEP_BOTH : slope_type.h
- FOUNDATION_STEEP_LOWER : slope_type.h
- FoundationPart : viewport.cpp
- FR_BORDERONLY : window_gui.h
- FR_DARKENED : window_gui.h
- FR_LOWERED : window_gui.h
- FR_TRANSPARENT : window_gui.h
- FrameFlags : window_gui.h
- FreeHeightMap() : tgp.cpp
- FreightWagonMult() : train_cmd.cpp , train.h
- FS2OTTD() : win32.cpp
- FT_HEIGHTMAP : fios.h
- FT_NONE : fios.h
- FT_SAVEGAME : fios.h
- FT_SCENARIO : fios.h