### - t -

- TerraformToolbarWidgets : terraform_gui.cpp
- TextColour : gfx_type.h
- TextDirection : strings_type.h
- TextEffectMode : texteff.hpp
- TileContext : newgrf_commons.h
- TileSource : elrail_data.h
- TileType : tile_type.h
- TimetableViewWindowWidgets : timetable_gui.cpp
- TLG : elrail_data.h
- Token : depend.cpp
- ToolbarNormalWidgets : toolbar_gui.cpp
- TownActions : town.h
- TownAuthorityWidgets : town_gui.cpp
- TownDirectoryWidgets : town_gui.cpp
- TownEffect : cargotype.h
- TownFounding : town_type.h
- TownLayout : town_type.h
- TownScenarioEditorWidgets : town_gui.cpp
- TownSize : town_type.h
- TownViewWidgets : town_gui.cpp
- Track : track_type.h
- TrackBits : track_type.h
- Trackdir : track_type.h
- TrackdirBits : track_type.h
- TrainDetailsWindowTabs : vehicle_gui.h
- TransparencyOption : transparency.h
- TransparencyToolbarWidgets : transparency_gui.cpp
- TransportType : transport_type.h
- TreeGround : tree_map.h
- TreePlacer : tree_cmd.cpp
- TreeType : tree_map.h
- TropicZone : tile_type.h