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

### - t -

- TACT_ADVERTISE : town.h
- TACT_ADVERTISE_LARGE : town.h
- TACT_ADVERTISE_MEDIUM : town.h
- TACT_ADVERTISE_SMALL : town.h
- TACT_ALL : town.h
- TACT_BRIBE : town.h
- TACT_BUILD_STATUE : town.h
- TACT_BUY_RIGHTS : town.h
- TACT_CONSTRUCTION : town.h
- TACT_COUNT : town.h
- TACT_FOUND_BUILDINGS : town.h
- TACT_FUNDS : town.h
- TACT_NONE : town.h
- TACT_ROAD_REBUILD : town.h
- TBN_END : toolbar_gui.cpp
- TBN_SWITCHBAR : toolbar_gui.cpp
- TBN_VEHICLESTART : toolbar_gui.cpp
- TCX_NORMAL : newgrf_commons.h
- TCX_ON_BRIDGE : newgrf_commons.h
- TCX_UPPER_HALFTILE : newgrf_commons.h
- TD_LTR : strings_type.h
- TD_RTL : strings_type.h
- TDW_TAB_CAPACITY : vehicle_gui.h
- TDW_TAB_CARGO : vehicle_gui.h
- TDW_TAB_INFO : vehicle_gui.h
- TDW_TAB_TOTALS : vehicle_gui.h
- TE_FOOD : cargotype.h
- TE_GOODS : cargotype.h
- TE_MAIL : cargotype.h
- TE_NONE : cargotype.h
- TE_PASSENGERS : cargotype.h
- TE_RISING : texteff.hpp
- TE_STATIC : texteff.hpp
- TE_WATER : cargotype.h
- TerraformAddDirtyTile() : terraform_cmd.cpp
- TerraformAddDirtyTileAround() : terraform_cmd.cpp
- TerraformGetHeightOfTile() : terraform_cmd.cpp
- TerraformSetHeightOfTile() : terraform_cmd.cpp
- TerraformTileHeight() : terraform_cmd.cpp
- TerraformTileProc : tile_cmd.h
- TerraformToolbarWidgets : terraform_gui.cpp
- TestAutoslopeOnRailTile() : rail_cmd.cpp
- TestTileOnSearchProc : map_func.h
- TextColour : gfx_type.h
- TextDirection : strings_type.h
- TextEffectMode : texteff.hpp
- TF_ALLOWED : town_type.h
- TF_BEGIN : town_type.h
- TF_CUSTOM_LAYOUT : town_type.h
- TF_END : town_type.h
- TF_FORBIDDEN : town_type.h
- TgenSetTileHeight() : tgp.cpp
- TGP_FREQUENCY_MAX : tgp.cpp
- Ticks : date_type.h
- TicksToLeaveDepot() : rail.h , rail_cmd.cpp
- TILE_ADD : map_func.h
- TILE_ADDXY : map_func.h
- TILE_AREA_LOOP : map_func.h
- TILE_HEIGHT : tile_type.h
- TILE_LOOP : map_func.h
- TILE_MASK : map_func.h
- TILE_PIXELS : tile_type.h
- TILE_SEQ_END : station_land.h
- TILE_SEQ_LINE : station_land.h
- TILE_SEQ_LINE_PAL : station_land.h
- TILE_SIZE : tile_type.h
- TILE_SPRITE_LINE : station_land.h
- TILE_UNIT_MASK : tile_type.h
- TileAddByDiagDir() : map_func.h
- TileAddWrap() : map.cpp , map_func.h
- TileContext : newgrf_commons.h
- TileDiffXY() : map_func.h
- TileHash() : town.h
- TileHash2Bit() : town.h
- TileHeight() : tile_map.h
- TileIndex : ai_types.hpp , tile_type.h
- TileIndexDiff : map_func.h , map_type.h
- TileIndexDiffCByDiagDir() : map_func.h
- TileIndexDiffCByDir() : map_func.h
- TileIndexToTileIndexDiffC() : map_func.h
- TileLoop_Town() : town_cmd.cpp
- TileLoop_Water() : water.h , water_cmd.cpp
- TileLoopClearAlps() : clear_cmd.cpp
- TileOffsByDiagDir() : map_func.h
- TileOffsByDir() : map_func.h
- TilePixelHeight() : tile_map.h
- TileSource : elrail_data.h
- TileStr() : dbg_helpers.cpp
- TileType : tile_type.h
- TileX() : map_func.h
- TileXY() : map_func.h
- TileY() : map_func.h
- TIME_BETWEEN_DOUBLE_CLICK : window.cpp
- TimetableViewWindowWidgets : timetable_gui.cpp
- TL_2X2_GRID : town_type.h
- TL_3X3_GRID : town_type.h
- TL_BETTER_ROADS : town_type.h
- TL_ORIGINAL : town_type.h
- TL_RANDOM : town_type.h
- TLG : elrail_data.h
- TO_BRIDGES : transparency.h
- TO_BUILDINGS : transparency.h
- TO_CATENARY : transparency.h
- TO_HOUSES : transparency.h
- TO_INDUSTRIES : transparency.h
- TO_LOADING : transparency.h
- TO_SIGNS : transparency.h
- TO_STRUCTURES : transparency.h
- TO_TREES : transparency.h
- ToggleBit() : bitmath_func.hpp
- ToggleInvisibility() : transparency.h
- ToggleInvisibilityWithTransparency() : transparency.h
- ToggleRailButton_Remove() : rail_gui.cpp
- ToggleRoadButton_Remove() : road_gui.cpp
- ToggleTransparency() : transparency.h
- ToggleTransparencyLock() : transparency.h
- Token : depend.cpp
- TOKEN_AND : depend.cpp
- TOKEN_CLOSE : depend.cpp
- TOKEN_DEFINE : depend.cpp
- TOKEN_DEFINED : depend.cpp
- TOKEN_ELIF : depend.cpp
- TOKEN_ELSE : depend.cpp
- TOKEN_END : depend.cpp
- TOKEN_ENDIF : depend.cpp
- TOKEN_EOL : depend.cpp
- TOKEN_GLOBAL : depend.cpp
- TOKEN_IDENTIFIER : depend.cpp
- TOKEN_IF : depend.cpp
- TOKEN_IFDEF : depend.cpp
- TOKEN_IFNDEF : depend.cpp
- TOKEN_INCLUDE : depend.cpp
- TOKEN_LOCAL : depend.cpp
- TOKEN_NOT : depend.cpp
- TOKEN_OPEN : depend.cpp
- TOKEN_OR : depend.cpp
- TOKEN_SHARP : depend.cpp
- TOKEN_UNDEF : depend.cpp
- TOKEN_UNKNOWN : depend.cpp
- TOKEN_ZERO : depend.cpp
- ToolbarNormalWidgets : toolbar_gui.cpp
- ToPercent16() : math_func.hpp
- ToPercent8() : math_func.hpp
- ToTileIndexDiff() : map_func.h
- TOWN_GROWTH_FREQUENCY : town.h
- TOWN_HAS_CHURCH : town.h
- TOWN_HAS_STADIUM : town.h
- TOWN_HOUSE_COMPLETED : house.h
- TOWN_IS_FUNDED : town.h
- TownActionBuildStatue() : town_cmd.cpp
- TownActions : town.h
- TownAuthorityWidgets : town_gui.cpp
- TownCanBePlacedHere() : town_cmd.cpp
- TownDirectoryWidgets : town_gui.cpp
- TownEffect : cargotype.h
- TownFounding : town_type.h
- TownFoundingByte : town_type.h
- TownGetVariable() : newgrf_town.cpp , newgrf_town.h
- TownHouseChangeInfo() : newgrf.cpp
- TownID : ai_types.hpp
- TownLayout : town_type.h
- TownLayoutAllows2x2HouseHere() : town_cmd.cpp
- TownLayoutAllowsHouseHere() : town_cmd.cpp
- TownLayoutByte : town_type.h
- TownScenarioEditorWidgets : town_gui.cpp
- TownSize : town_type.h
- TownViewWidgets : town_gui.cpp
- TP_IMPROVED : tree_cmd.cpp
- TP_NONE : tree_cmd.cpp
- TP_ORIGINAL : tree_cmd.cpp
- Track : track_type.h
- TRACK_BEGIN : track_type.h
- TRACK_BIT_3WAY_NE : track_type.h
- TRACK_BIT_3WAY_NW : track_type.h
- TRACK_BIT_3WAY_SE : track_type.h
- TRACK_BIT_3WAY_SW : track_type.h
- TRACK_BIT_ALL : track_type.h
- TRACK_BIT_CROSS : track_type.h
- TRACK_BIT_DEPOT : track_type.h
- TRACK_BIT_HORZ : track_type.h
- TRACK_BIT_LEFT : track_type.h
- TRACK_BIT_LOWER : track_type.h
- TRACK_BIT_MASK : track_type.h
- TRACK_BIT_NONE : track_type.h
- TRACK_BIT_RIGHT : track_type.h
- TRACK_BIT_UPPER : track_type.h
- TRACK_BIT_VERT : track_type.h
- TRACK_BIT_WORMHOLE : track_type.h
- TRACK_BIT_X : track_type.h
- TRACK_BIT_Y : track_type.h
- TRACK_END : track_type.h
- TRACK_LEFT : track_type.h
- TRACK_LOWER : track_type.h
- TRACK_RIGHT : track_type.h
- TRACK_UPPER : track_type.h
- TRACK_X : track_type.h
- TRACK_Y : track_type.h
- TrackBits : track_type.h
- TrackBitsToTrack() : track_func.h
- TrackBitsToTrackdirBits() : track_func.h
- TrackCrossesTracks() : track_func.h
- Trackdir : track_type.h
- TRACKDIR_BEGIN : track_type.h
- TRACKDIR_BIT_LEFT_N : track_type.h
- TRACKDIR_BIT_LEFT_S : track_type.h
- TRACKDIR_BIT_LOWER_E : track_type.h
- TRACKDIR_BIT_LOWER_W : track_type.h
- TRACKDIR_BIT_MASK : track_type.h
- TRACKDIR_BIT_NONE : track_type.h
- TRACKDIR_BIT_RIGHT_N : track_type.h
- TRACKDIR_BIT_RIGHT_S : track_type.h
- TRACKDIR_BIT_UPPER_E : track_type.h
- TRACKDIR_BIT_UPPER_W : track_type.h
- TRACKDIR_BIT_X_NE : track_type.h
- TRACKDIR_BIT_X_SW : track_type.h
- TRACKDIR_BIT_Y_NW : track_type.h
- TRACKDIR_BIT_Y_SE : track_type.h
- TRACKDIR_END : track_type.h
- TRACKDIR_LEFT_N : track_type.h
- TRACKDIR_LEFT_S : track_type.h
- TRACKDIR_LOWER_E : track_type.h
- TRACKDIR_LOWER_W : track_type.h
- trackdir_names : dbg_helpers.cpp
- TRACKDIR_RIGHT_N : track_type.h
- TRACKDIR_RIGHT_S : track_type.h
- TRACKDIR_RVREV_NE : track_type.h
- TRACKDIR_RVREV_NW : track_type.h
- TRACKDIR_RVREV_SE : track_type.h
- TRACKDIR_RVREV_SW : track_type.h
- TRACKDIR_UPPER_E : track_type.h
- TRACKDIR_UPPER_W : track_type.h
- TRACKDIR_X_NE : track_type.h
- TRACKDIR_X_SW : track_type.h
- TRACKDIR_Y_NW : track_type.h
- TRACKDIR_Y_SE : track_type.h
- TrackdirBits : track_type.h
- TrackdirBitsToTrackBits() : track_func.h
- TrackdirCrossesTrackdirs() : track_func.h
- TrackDirectionToTrackdir() : track_func.h
- TrackdirReachesTrackdirs() : track_func.h
- TrackdirToExitdir() : track_func.h
- TrackdirToTrack() : track_func.h
- TrackdirToTrackdirBits() : track_func.h
- TrackEnterdirToTrackdir() : track_func.h
- TrackExitdirToTrackdir() : track_func.h
- TrackOverlapsTracks() : track_func.h
- TracksOverlap() : track_func.h
- TrackStatusToRedSignals() : track_func.h
- TrackStatusToTrackBits() : track_func.h
- TrackStatusToTrackdirBits() : track_func.h
- TrackToOppositeTrack() : track_func.h
- TrackToTrackBits() : track_func.h
- TrackToTrackdir() : track_func.h
- TrackToTrackdirBits() : track_func.h
- TRAIN_DETAILS_MAX_INDENT : train_gui.cpp
- TRAIN_DETAILS_MIN_INDENT : train_gui.cpp
- TrainApproachingCrossing() : train_cmd.cpp
- TrainApproachingCrossingEnum() : train_cmd.cpp
- TrainApproachingCrossingTile() : train_cmd.cpp
- TrainApproachingLineEnd() : train_cmd.cpp
- TrainCanLeaveTile() : train_cmd.cpp
- TrainCheckIfLineEnds() : train_cmd.cpp
- TrainCrashed() : train_cmd.cpp
- TrainDetailsCapacityTab() : train_gui.cpp
- TrainDetailsCargoTab() : train_gui.cpp
- TrainDetailsInfoTab() : train_gui.cpp
- TrainDetailsWindowTabs : vehicle_gui.h
- TrainExitDir() : train_cmd.cpp
- TrainList : train_cmd.cpp , rail_cmd.cpp
- TrainOnTileEnum() : signal.cpp , train_cmd.cpp
- TrainSlopeSteepnessChanged() : settings.cpp
- TransferCargo() : autoreplace_cmd.cpp
- TranslateXYToTileCoord() : viewport.cpp
- TransparencyOption : transparency.h
- TransparencyOptionBits : transparency.h
- TransparencyToolbarWidgets : transparency_gui.cpp
- TRANSPARENT_BIT : sprites.h
- TRANSPORT_AIR : transport_type.h
- TRANSPORT_RAIL : transport_type.h
- TRANSPORT_ROAD : transport_type.h
- TRANSPORT_WATER : transport_type.h
- TransportType : transport_type.h
- TREE_CACTUS : tree_map.h
- TREE_COUNT_RAINFOREST : tree_map.h
- TREE_COUNT_SUB_ARCTIC : tree_map.h
- TREE_COUNT_SUB_TROPICAL : tree_map.h
- TREE_COUNT_TEMPERATE : tree_map.h
- TREE_COUNT_TOYLAND : tree_map.h
- TREE_GROUND_GRASS : tree_map.h
- TREE_GROUND_ROUGH : tree_map.h
- TREE_GROUND_ROUGH_SNOW : tree_map.h
- TREE_GROUND_SHORE : tree_map.h
- TREE_GROUND_SNOW_DESERT : tree_map.h
- TREE_INVALID : tree_map.h
- TREE_RAINFOREST : tree_map.h
- TREE_SUB_ARCTIC : tree_map.h
- TREE_SUB_TROPICAL : tree_map.h
- TREE_TEMPERATE : tree_map.h
- TREE_TOYLAND : tree_map.h
- TreeGround : tree_map.h
- TreePlacer : tree_cmd.cpp
- TreeType : tree_map.h
- TriggerIndustryProduction() : economy.cpp
- TropicZone : tile_type.h
- TROPICZONE_DESERT : tile_type.h
- TROPICZONE_NORMAL : tile_type.h
- TROPICZONE_RAINFOREST : tile_type.h
- TruncateString() : gfx.cpp
- TryPathReserve() : train_cmd.cpp , train.h
- TryReserveRailTrack() : pbs.h , pbs.cpp
- TryReserveSafeTrack() : train_cmd.cpp
- TryReserveTrack() : rail_map.h
- TSZ_END : town_type.h
- TSZ_LARGE : town_type.h
- TSZ_MEDIUM : town_type.h
- TSZ_RANDOM : town_type.h
- TSZ_SMALL : town_type.h
- ttd_opendir() : fileio_func.h
- ttd_strlcat() : string_func.h , string.cpp
- ttd_strlcpy() : string.cpp , string_func.h
- ttd_strnlen() : string_func.h
- TTDPatch_To_OTTDIndex : currency.cpp
- TTDPStringIDToOTTDStringIDMapping() : newgrf_text.cpp , newgrf_text.h
- TTV_ARRIVAL_DEPARTURE_PANEL : timetable_gui.cpp
- TTV_ARRIVAL_DEPARTURE_SELECTION : timetable_gui.cpp
- TTV_EXPECTED : timetable_gui.cpp
- TTV_EXPECTED_SELECTION : timetable_gui.cpp
- TTV_FAKE_SCROLLBAR : timetable_gui.cpp
- TTV_SHARED_ORDER_LIST : timetable_gui.cpp
- TTW_BUTTONS_START : terraform_gui.cpp
- TTW_BUY_LAND : terraform_gui.cpp
- TTW_DEMOLISH : terraform_gui.cpp
- TTW_LEVEL_LAND : terraform_gui.cpp
- TTW_LOWER_LAND : terraform_gui.cpp
- TTW_PLACE_SIGN : terraform_gui.cpp
- TTW_PLANT_TREES : terraform_gui.cpp
- TTW_RAISE_LAND : terraform_gui.cpp
- TTW_WIDGET_BEGIN : transparency_gui.cpp
- TTW_WIDGET_BRIDGES : transparency_gui.cpp
- TTW_WIDGET_BUILDINGS : transparency_gui.cpp
- TTW_WIDGET_BUTTONS : transparency_gui.cpp
- TTW_WIDGET_CATENARY : transparency_gui.cpp
- TTW_WIDGET_END : transparency_gui.cpp
- TTW_WIDGET_HOUSES : transparency_gui.cpp
- TTW_WIDGET_INDUSTRIES : transparency_gui.cpp
- TTW_WIDGET_LOADING : transparency_gui.cpp
- TTW_WIDGET_SIGNS : transparency_gui.cpp
- TTW_WIDGET_STRUCTURES : transparency_gui.cpp
- TTW_WIDGET_TREES : transparency_gui.cpp
- TWA_ACTION_INFO : town_gui.cpp
- TWA_COMMAND_LIST : town_gui.cpp
- TWA_EXECUTE : town_gui.cpp
- TWA_RATING_INFO : town_gui.cpp