Here is a list of all documented struct and union fields with links to the struct/union documentation for each field:

### - d -

- d : SettingEntry
- Data() : CBlobT< Titem_, Tbase_ >
- data : LoggedChange , GRFError
- Data() : CBlobT< Titem_, Tbase_ >
- data : SmallSet< Tdir, items > , SpriteLoader::Sprite
- Data() : CBlobT< Titem_, Tbase_ >
- data : SmallStackSafeStackAlloc< T, length > , Widget , SmallVector< T, S >
- date_format_in_default_names : GUISettings
- day : YearMonthDay
- days_in_transit : CargoList , CargoPacket
- DaysInTransit() : CargoList
- DebugCheckSanity() : OrderList
- decode_params : DropDownListParamStringItem
- default_height : WindowDesc
- default_rail_type : GUISettings
- default_signal_type : GUISettings
- default_width : WindowDesc
- DefSQAdvancedMethod() : DefSQClass< CL >
- DefSQMethod() : DefSQClass< CL >
- DefSQStaticMethod() : DefSQClass< CL >
- delay : AIStorage
- DeleteChildWindows() : Window
- DeleteGroup() : AIGroup
- DeleteOrderAt() : OrderList
- delta : CursorVars
- delta_x : DrawTileSeqStruct
- delta_z : AirportFTAClass
- DemolishTile() : AITile
- depot : RailtypeInfo
- desc_flags : Window
- description : GraphicsSet
- DestinationIsTown() : AISubsidy
- Detach() : CCountedPtr< Tcls_ >
- diff_level : DifficultySettings
- difficulty : GameSettings
- dirty : CursorVars
- disable_elrails : VehicleSettings
- disable_node_optimization : YAPFSettings
- DisableWidget() : Window
- disasters : DifficultySettings
- DisasterVehicle() : DisasterVehicle
- display : NewsTypeData
- display_flags : Widget
- display_mode : NewsSubtypeData
- display_time : AnimCursor
- dist_local_authority : EconomySettings
- DistanceFromEdge() : AIMap
- DistanceManhattan() : AIMap
- DistanceMax() : AIMap
- DistanceSquare() : AIMap
- distant_join_stations : StationSettings
- DoCommand() : AIObject
- DoScan() : GRFFileScanner , OBGFileScanner
- dparam : TileDesc
- drag_signals_density : GUISettings
- Draw() : SettingEntry , Blitter , SettingsPage
- draw_size : CursorVars
- draw_tile_proc : TileTypeProcs
- DrawColourMappingRect() : Blitter
- DrawLine() : Blitter
- DrawRect() : Blitter
- DrawSetting() : SettingEntry
- DrawSortButtonState() : Window
- DrawViewport() : Window
- DrawWidgets() : Window
- dummy : Cheats
- dynamic_engines : VehicleSettings