### - t -

- tab : VehicleDetailsWindow
- table : AirportSpec , SnowLine , IndustrySpec
- tag : SaveLoadFormat
- tail : NWidgetContainer
- Tcapacity : SmallArray< T, B, N >
- terraform_tile_proc : TileTypeProcs
- terrain_type : DifficultySettings
- text : CommandContainer , LoggedChange
- text_dir : LanguagePackHeader , DynamicLanguages
- TEXT_INDENT : SelectCompanyLiveryWindow
- text_lines : NWidgetPart
- tgen_smoothness : GameCreationSettings
- this_month_production : Industry
- this_month_transported : Industry
- thread : GenWorldInfo , ThreadObject_OS2 , ThreadObject_pthread , ThreadObject_Win32
- threaded : GenWorldInfo
- threaded_saves : GUISettings
- tick : LoggedAction
- tile : SpotData , CommandContainer , FindDepotData , PBSTileInfo , TileAndStation , TileInfo , TileArea
- TILE_INVALID : AIMap
- tileh : TileInfo
- time : IConsoleLine
- timer_enabled : BuildIndustryWindow
- timetable_arrival_departure : GUISettings
- timetable_duration : OrderList
- timetable_in_ticks : GUISettings
- timetabling : OrderSettings
- title : SettingEntrySubtree
- token : Lexer
- tool_tip : NWidgetCore
- toolbar_pos : GUISettings
- tooltip : NWidgetPartDataTip
- top : ParentSpriteToDraw , ViewPort , ViewportSign , Window
- top_offset : AIDebugWindow
- total_offset : RailtypeInfo
- town : BaseStation , Industry , TownAuthorityWindow
- town_council_tolerance : DifficultySettings
- town_effect : CargoSpec
- town_growth_rate : EconomySettings
- town_layout : FoundTownWindow , EconomySettings
- town_name : GameCreationSettings
- town_noise_population : EconomySettings
- town_size : FoundTownWindow
- townnameparts : FoundTownWindow
- townnamevalid : FoundTownWindow
- track : AIRailSignalData
- track_ns : RailtypeInfo
- track_y : RailtypeInfo
- trackdir : PBSTileInfo , AIRailSignalData
- train_acceleration_model : VehicleSettings
- train_slope_steepness : VehicleSettings
- train_station : BaseStation
- traininfo_vehicle_pitch : GRFFile
- traininfo_vehicle_width : GRFFile
- transport_name : BridgeSpec
- tree_placer : GameCreationSettings
- tree_to_plant : BuildTreesWindow
- truck_station : Station
- truck_stops : Station
- Ttail_reserve : CBlobBaseSimple
- tunnel : RailtypeInfo
- turn_counter : Aircraft
- type : NewsSubtypeData , Industry , NWidgetPart , AIEvent , LegendAndColour , LoggedChange , TownNameParams , NWidgetBase , IConsoleVar , IniGroup , AILog::LogData
- type_height : Tile