diff --git a/src/depot_gui.cpp b/src/depot_gui.cpp
--- a/src/depot_gui.cpp
+++ b/src/depot_gui.cpp
@@ -44,37 +44,37 @@
 static const NWidgetPart _nested_train_depot_widgets[] = {
 	NWidget(NWID_HORIZONTAL),
 		NWidget(WWT_CLOSEBOX, COLOUR_GREY),
-		NWidget(WWT_CAPTION, COLOUR_GREY, WID_VD_CAPTION), SetDataTip(STR_DEPOT_CAPTION, STR_NULL),
+		NWidget(WWT_CAPTION, COLOUR_GREY, WID_D_CAPTION), SetDataTip(STR_DEPOT_CAPTION, STR_NULL),
 		NWidget(WWT_SHADEBOX, COLOUR_GREY),
 		NWidget(WWT_STICKYBOX, COLOUR_GREY),
 	EndContainer(),
 	NWidget(NWID_HORIZONTAL),
 		NWidget(NWID_VERTICAL),
-			NWidget(WWT_MATRIX, COLOUR_GREY, WID_VD_MATRIX), SetDataTip(0x0, STR_NULL), SetResize(1, 1), SetScrollbar(WID_VD_V_SCROLL),
-			NWidget(NWID_SELECTION, INVALID_COLOUR, WID_VD_SHOW_H_SCROLL),
-				NWidget(NWID_HSCROLLBAR, COLOUR_GREY, WID_VD_H_SCROLL),
+			NWidget(WWT_MATRIX, COLOUR_GREY, WID_D_MATRIX), SetDataTip(0x0, STR_NULL), SetResize(1, 1), SetScrollbar(WID_D_V_SCROLL),
+			NWidget(NWID_SELECTION, INVALID_COLOUR, WID_D_SHOW_H_SCROLL),
+				NWidget(NWID_HSCROLLBAR, COLOUR_GREY, WID_D_H_SCROLL),
 			EndContainer(),
 		EndContainer(),
 		NWidget(NWID_VERTICAL),
-			NWidget(WWT_IMGBTN, COLOUR_GREY, WID_VD_SELL), SetDataTip(0x0, STR_NULL), SetResize(0, 1), SetFill(0, 1),
-			NWidget(NWID_SELECTION, INVALID_COLOUR, WID_VD_SHOW_SELL_CHAIN),
-				NWidget(WWT_IMGBTN, COLOUR_GREY, WID_VD_SELL_CHAIN), SetDataTip(SPR_SELL_CHAIN_TRAIN, STR_DEPOT_DRAG_WHOLE_TRAIN_TO_SELL_TOOLTIP), SetResize(0, 1), SetFill(0, 1),
+			NWidget(WWT_IMGBTN, COLOUR_GREY, WID_D_SELL), SetDataTip(0x0, STR_NULL), SetResize(0, 1), SetFill(0, 1),
+			NWidget(NWID_SELECTION, INVALID_COLOUR, WID_D_SHOW_SELL_CHAIN),
+				NWidget(WWT_IMGBTN, COLOUR_GREY, WID_D_SELL_CHAIN), SetDataTip(SPR_SELL_CHAIN_TRAIN, STR_DEPOT_DRAG_WHOLE_TRAIN_TO_SELL_TOOLTIP), SetResize(0, 1), SetFill(0, 1),
 			EndContainer(),
-			NWidget(WWT_PUSHIMGBTN, COLOUR_GREY, WID_VD_SELL_ALL), SetDataTip(0x0, STR_NULL),
-			NWidget(WWT_PUSHIMGBTN, COLOUR_GREY, WID_VD_AUTOREPLACE), SetDataTip(0x0, STR_NULL),
+			NWidget(WWT_PUSHIMGBTN, COLOUR_GREY, WID_D_SELL_ALL), SetDataTip(0x0, STR_NULL),
+			NWidget(WWT_PUSHIMGBTN, COLOUR_GREY, WID_D_AUTOREPLACE), SetDataTip(0x0, STR_NULL),
 		EndContainer(),
-		NWidget(NWID_VSCROLLBAR, COLOUR_GREY, WID_VD_V_SCROLL),
+		NWidget(NWID_VSCROLLBAR, COLOUR_GREY, WID_D_V_SCROLL),
 	EndContainer(),
 	NWidget(NWID_HORIZONTAL, NC_EQUALSIZE),
-		NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_VD_BUILD), SetDataTip(0x0, STR_NULL), SetFill(1, 1), SetResize(1, 0),
-		NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_VD_CLONE), SetDataTip(0x0, STR_NULL), SetFill(1, 1), SetResize(1, 0),
-		NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_VD_LOCATION), SetDataTip(STR_BUTTON_LOCATION, STR_NULL), SetFill(1, 1), SetResize(1, 0),
-		NWidget(NWID_SELECTION, INVALID_COLOUR, WID_VD_SHOW_RENAME), // rename button
-			NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_VD_RENAME), SetDataTip(STR_BUTTON_RENAME, STR_DEPOT_RENAME_TOOLTIP), SetFill(1, 1), SetResize(1, 0),
+		NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_D_BUILD), SetDataTip(0x0, STR_NULL), SetFill(1, 1), SetResize(1, 0),
+		NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_D_CLONE), SetDataTip(0x0, STR_NULL), SetFill(1, 1), SetResize(1, 0),
+		NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_D_LOCATION), SetDataTip(STR_BUTTON_LOCATION, STR_NULL), SetFill(1, 1), SetResize(1, 0),
+		NWidget(NWID_SELECTION, INVALID_COLOUR, WID_D_SHOW_RENAME), // rename button
+			NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_D_RENAME), SetDataTip(STR_BUTTON_RENAME, STR_DEPOT_RENAME_TOOLTIP), SetFill(1, 1), SetResize(1, 0),
 		EndContainer(),
-		NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_VD_VEHICLE_LIST), SetDataTip(0x0, STR_NULL), SetFill(0, 1),
-		NWidget(WWT_PUSHIMGBTN, COLOUR_GREY, WID_VD_STOP_ALL), SetDataTip(SPR_FLAG_VEH_STOPPED, STR_NULL), SetFill(0, 1),
-		NWidget(WWT_PUSHIMGBTN, COLOUR_GREY, WID_VD_START_ALL), SetDataTip(SPR_FLAG_VEH_RUNNING, STR_NULL), SetFill(0, 1),
+		NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_D_VEHICLE_LIST), SetDataTip(0x0, STR_NULL), SetFill(0, 1),
+		NWidget(WWT_PUSHIMGBTN, COLOUR_GREY, WID_D_STOP_ALL), SetDataTip(SPR_FLAG_VEH_STOPPED, STR_NULL), SetFill(0, 1),
+		NWidget(WWT_PUSHIMGBTN, COLOUR_GREY, WID_D_START_ALL), SetDataTip(SPR_FLAG_VEH_RUNNING, STR_NULL), SetFill(0, 1),
 		NWidget(WWT_RESIZEBOX, COLOUR_GREY),
 	EndContainer(),
 };
@@ -144,7 +144,7 @@ static void TrainDepotMoveVehicle(const 
 }
 
 /**
- * Array containing the cell size in pixels of the #WID_VD_MATRIX widget for each vehicle type.
+ * Array containing the cell size in pixels of the #WID_D_MATRIX widget for each vehicle type.
  * @note The train vehicle type uses the entire row for each train.
  */
 static Dimension _base_block_sizes[4];
@@ -221,13 +221,13 @@ struct DepotWindow : Window {
 		this->num_columns = 1; // for non-trains this gets set in FinishInitNested()
 
 		this->CreateNestedTree(desc);
-		this->hscroll = (this->type == VEH_TRAIN ? this->GetScrollbar(WID_VD_H_SCROLL) : NULL);
-		this->vscroll = this->GetScrollbar(WID_VD_V_SCROLL);
+		this->hscroll = (this->type == VEH_TRAIN ? this->GetScrollbar(WID_D_H_SCROLL) : NULL);
+		this->vscroll = this->GetScrollbar(WID_D_V_SCROLL);
 		/* Don't show 'rename button' of aircraft hangar */
-		this->GetWidget<NWidgetStacked>(WID_VD_SHOW_RENAME)->SetDisplayedPlane(type == VEH_AIRCRAFT ? SZSP_NONE : 0);
+		this->GetWidget<NWidgetStacked>(WID_D_SHOW_RENAME)->SetDisplayedPlane(type == VEH_AIRCRAFT ? SZSP_NONE : 0);
 		/* Only train depots have a horizontal scrollbar and a 'sell chain' button */
-		this->GetWidget<NWidgetStacked>(WID_VD_SHOW_H_SCROLL)->SetDisplayedPlane(type == VEH_TRAIN ? 0 : SZSP_HORIZONTAL);
-		this->GetWidget<NWidgetStacked>(WID_VD_SHOW_SELL_CHAIN)->SetDisplayedPlane(type == VEH_TRAIN ? 0 : SZSP_NONE);
+		this->GetWidget<NWidgetStacked>(WID_D_SHOW_H_SCROLL)->SetDisplayedPlane(type == VEH_TRAIN ? 0 : SZSP_HORIZONTAL);
+		this->GetWidget<NWidgetStacked>(WID_D_SHOW_SELL_CHAIN)->SetDisplayedPlane(type == VEH_TRAIN ? 0 : SZSP_NONE);
 		this->SetupWidgetData(type);
 		this->FinishInitNested(desc, tile);
 
@@ -310,12 +310,12 @@ struct DepotWindow : Window {
 
 	void DrawWidget(const Rect &r, int widget) const
 	{
-		if (widget != WID_VD_MATRIX) return;
+		if (widget != WID_D_MATRIX) return;
 
 		bool rtl = _current_text_dir == TD_RTL;
 
 		/* Set the row and number of boxes in each row based on the number of boxes drawn in the matrix */
-		uint16 mat_data = this->GetWidget<NWidgetCore>(WID_VD_MATRIX)->widget_data;
+		uint16 mat_data = this->GetWidget<NWidgetCore>(WID_D_MATRIX)->widget_data;
 		uint16 rows_in_display   = GB(mat_data, MAT_ROW_START, MAT_ROW_BITS);
 		uint16 boxes_in_each_row = GB(mat_data, MAT_COL_START, MAT_COL_BITS);
 
@@ -346,7 +346,7 @@ struct DepotWindow : Window {
 
 	void SetStringParameters(int widget) const
 	{
-		if (widget != WID_VD_CAPTION) return;
+		if (widget != WID_D_CAPTION) return;
 
 		/* locate the depot struct */
 		TileIndex tile = this->window_number;
@@ -368,7 +368,7 @@ struct DepotWindow : Window {
 
 	DepotGUIAction GetVehicleFromDepotWndPt(int x, int y, const Vehicle **veh, GetDepotVehiclePtData *d) const
 	{
-		const NWidgetCore *matrix_widget = this->GetWidget<NWidgetCore>(WID_VD_MATRIX);
+		const NWidgetCore *matrix_widget = this->GetWidget<NWidgetCore>(WID_D_MATRIX);
 		/* In case of RTL the widgets are swapped as a whole */
 		if (_current_text_dir == TD_RTL) x = matrix_widget->current_x - x;
 
@@ -514,56 +514,56 @@ struct DepotWindow : Window {
 	 */
 	void SetupWidgetData(VehicleType type)
 	{
-		this->GetWidget<NWidgetCore>(WID_VD_STOP_ALL)->tool_tip     = STR_DEPOT_MASS_STOP_DEPOT_TRAIN_TOOLTIP + type;
-		this->GetWidget<NWidgetCore>(WID_VD_START_ALL)->tool_tip    = STR_DEPOT_MASS_START_DEPOT_TRAIN_TOOLTIP + type;
-		this->GetWidget<NWidgetCore>(WID_VD_SELL)->tool_tip         = STR_DEPOT_TRAIN_SELL_TOOLTIP + type;
-		this->GetWidget<NWidgetCore>(WID_VD_SELL_ALL)->tool_tip     = STR_DEPOT_SELL_ALL_BUTTON_TRAIN_TOOLTIP + type;
+		this->GetWidget<NWidgetCore>(WID_D_STOP_ALL)->tool_tip     = STR_DEPOT_MASS_STOP_DEPOT_TRAIN_TOOLTIP + type;
+		this->GetWidget<NWidgetCore>(WID_D_START_ALL)->tool_tip    = STR_DEPOT_MASS_START_DEPOT_TRAIN_TOOLTIP + type;
+		this->GetWidget<NWidgetCore>(WID_D_SELL)->tool_tip         = STR_DEPOT_TRAIN_SELL_TOOLTIP + type;
+		this->GetWidget<NWidgetCore>(WID_D_SELL_ALL)->tool_tip     = STR_DEPOT_SELL_ALL_BUTTON_TRAIN_TOOLTIP + type;
 
-		this->GetWidget<NWidgetCore>(WID_VD_BUILD)->SetDataTip(STR_DEPOT_TRAIN_NEW_VEHICLES_BUTTON + type, STR_DEPOT_TRAIN_NEW_VEHICLES_TOOLTIP + type);
-		this->GetWidget<NWidgetCore>(WID_VD_CLONE)->SetDataTip(STR_DEPOT_CLONE_TRAIN + type, STR_DEPOT_CLONE_TRAIN_DEPOT_INFO + type);
+		this->GetWidget<NWidgetCore>(WID_D_BUILD)->SetDataTip(STR_DEPOT_TRAIN_NEW_VEHICLES_BUTTON + type, STR_DEPOT_TRAIN_NEW_VEHICLES_TOOLTIP + type);
+		this->GetWidget<NWidgetCore>(WID_D_CLONE)->SetDataTip(STR_DEPOT_CLONE_TRAIN + type, STR_DEPOT_CLONE_TRAIN_DEPOT_INFO + type);
 
-		this->GetWidget<NWidgetCore>(WID_VD_LOCATION)->tool_tip     = STR_DEPOT_TRAIN_LOCATION_TOOLTIP + type;
-		this->GetWidget<NWidgetCore>(WID_VD_VEHICLE_LIST)->tool_tip = STR_DEPOT_VEHICLE_ORDER_LIST_TRAIN_TOOLTIP + type;
-		this->GetWidget<NWidgetCore>(WID_VD_AUTOREPLACE)->tool_tip  = STR_DEPOT_AUTOREPLACE_TRAIN_TOOLTIP + type;
-		this->GetWidget<NWidgetCore>(WID_VD_MATRIX)->tool_tip       = STR_DEPOT_TRAIN_LIST_TOOLTIP + this->type;
+		this->GetWidget<NWidgetCore>(WID_D_LOCATION)->tool_tip     = STR_DEPOT_TRAIN_LOCATION_TOOLTIP + type;
+		this->GetWidget<NWidgetCore>(WID_D_VEHICLE_LIST)->tool_tip = STR_DEPOT_VEHICLE_ORDER_LIST_TRAIN_TOOLTIP + type;
+		this->GetWidget<NWidgetCore>(WID_D_AUTOREPLACE)->tool_tip  = STR_DEPOT_AUTOREPLACE_TRAIN_TOOLTIP + type;
+		this->GetWidget<NWidgetCore>(WID_D_MATRIX)->tool_tip       = STR_DEPOT_TRAIN_LIST_TOOLTIP + this->type;
 
 		switch (type) {
 			default: NOT_REACHED();
 
 			case VEH_TRAIN:
-				this->GetWidget<NWidgetCore>(WID_VD_VEHICLE_LIST)->widget_data = STR_TRAIN;
+				this->GetWidget<NWidgetCore>(WID_D_VEHICLE_LIST)->widget_data = STR_TRAIN;
 
 				/* Sprites */
-				this->GetWidget<NWidgetCore>(WID_VD_SELL)->widget_data        = SPR_SELL_TRAIN;
-				this->GetWidget<NWidgetCore>(WID_VD_SELL_ALL)->widget_data    = SPR_SELL_ALL_TRAIN;
-				this->GetWidget<NWidgetCore>(WID_VD_AUTOREPLACE)->widget_data = SPR_REPLACE_TRAIN;
+				this->GetWidget<NWidgetCore>(WID_D_SELL)->widget_data        = SPR_SELL_TRAIN;
+				this->GetWidget<NWidgetCore>(WID_D_SELL_ALL)->widget_data    = SPR_SELL_ALL_TRAIN;
+				this->GetWidget<NWidgetCore>(WID_D_AUTOREPLACE)->widget_data = SPR_REPLACE_TRAIN;
 				break;
 
 			case VEH_ROAD:
-				this->GetWidget<NWidgetCore>(WID_VD_VEHICLE_LIST)->widget_data = STR_LORRY;
+				this->GetWidget<NWidgetCore>(WID_D_VEHICLE_LIST)->widget_data = STR_LORRY;
 
 				/* Sprites */
-				this->GetWidget<NWidgetCore>(WID_VD_SELL)->widget_data        = SPR_SELL_ROADVEH;
-				this->GetWidget<NWidgetCore>(WID_VD_SELL_ALL)->widget_data    = SPR_SELL_ALL_ROADVEH;
-				this->GetWidget<NWidgetCore>(WID_VD_AUTOREPLACE)->widget_data = SPR_REPLACE_ROADVEH;
+				this->GetWidget<NWidgetCore>(WID_D_SELL)->widget_data        = SPR_SELL_ROADVEH;
+				this->GetWidget<NWidgetCore>(WID_D_SELL_ALL)->widget_data    = SPR_SELL_ALL_ROADVEH;
+				this->GetWidget<NWidgetCore>(WID_D_AUTOREPLACE)->widget_data = SPR_REPLACE_ROADVEH;
 				break;
 
 			case VEH_SHIP:
-				this->GetWidget<NWidgetCore>(WID_VD_VEHICLE_LIST)->widget_data = STR_SHIP;
+				this->GetWidget<NWidgetCore>(WID_D_VEHICLE_LIST)->widget_data = STR_SHIP;
 
 				/* Sprites */
-				this->GetWidget<NWidgetCore>(WID_VD_SELL)->widget_data        = SPR_SELL_SHIP;
-				this->GetWidget<NWidgetCore>(WID_VD_SELL_ALL)->widget_data    = SPR_SELL_ALL_SHIP;
-				this->GetWidget<NWidgetCore>(WID_VD_AUTOREPLACE)->widget_data = SPR_REPLACE_SHIP;
+				this->GetWidget<NWidgetCore>(WID_D_SELL)->widget_data        = SPR_SELL_SHIP;
+				this->GetWidget<NWidgetCore>(WID_D_SELL_ALL)->widget_data    = SPR_SELL_ALL_SHIP;
+				this->GetWidget<NWidgetCore>(WID_D_AUTOREPLACE)->widget_data = SPR_REPLACE_SHIP;
 				break;
 
 			case VEH_AIRCRAFT:
-				this->GetWidget<NWidgetCore>(WID_VD_VEHICLE_LIST)->widget_data = STR_PLANE;
+				this->GetWidget<NWidgetCore>(WID_D_VEHICLE_LIST)->widget_data = STR_PLANE;
 
 				/* Sprites */
-				this->GetWidget<NWidgetCore>(WID_VD_SELL)->widget_data        = SPR_SELL_AIRCRAFT;
-				this->GetWidget<NWidgetCore>(WID_VD_SELL_ALL)->widget_data    = SPR_SELL_ALL_AIRCRAFT;
-				this->GetWidget<NWidgetCore>(WID_VD_AUTOREPLACE)->widget_data = SPR_REPLACE_AIRCRAFT;
+				this->GetWidget<NWidgetCore>(WID_D_SELL)->widget_data        = SPR_SELL_AIRCRAFT;
+				this->GetWidget<NWidgetCore>(WID_D_SELL_ALL)->widget_data    = SPR_SELL_ALL_AIRCRAFT;
+				this->GetWidget<NWidgetCore>(WID_D_AUTOREPLACE)->widget_data = SPR_REPLACE_AIRCRAFT;
 				break;
 		}
 	}
@@ -576,7 +576,7 @@ struct DepotWindow : Window {
 	virtual void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize)
 	{
 		switch (widget) {
-			case WID_VD_MATRIX: {
+			case WID_D_MATRIX: {
 				uint min_height = 0;
 
 				if (this->type == VEH_TRAIN) {
@@ -658,15 +658,15 @@ struct DepotWindow : Window {
 		/* Setup disabled buttons. */
 		TileIndex tile = this->window_number;
 		this->SetWidgetsDisabledState(!IsTileOwner(tile, _local_company),
-			WID_VD_STOP_ALL,
-			WID_VD_START_ALL,
-			WID_VD_SELL,
-			WID_VD_SELL_CHAIN,
-			WID_VD_SELL_ALL,
-			WID_VD_BUILD,
-			WID_VD_CLONE,
-			WID_VD_RENAME,
-			WID_VD_AUTOREPLACE,
+			WID_D_STOP_ALL,
+			WID_D_START_ALL,
+			WID_D_SELL,
+			WID_D_SELL_CHAIN,
+			WID_D_SELL_ALL,
+			WID_D_BUILD,
+			WID_D_CLONE,
+			WID_D_RENAME,
+			WID_D_AUTOREPLACE,
 			WIDGET_LIST_END);
 
 		this->DrawWidgets();
@@ -675,22 +675,22 @@ struct DepotWindow : Window {
 	virtual void OnClick(Point pt, int widget, int click_count)
 	{
 		switch (widget) {
-			case WID_VD_MATRIX: { // List
-				NWidgetBase *nwi = this->GetWidget<NWidgetBase>(WID_VD_MATRIX);
+			case WID_D_MATRIX: { // List
+				NWidgetBase *nwi = this->GetWidget<NWidgetBase>(WID_D_MATRIX);
 				this->DepotClick(pt.x - nwi->pos_x, pt.y - nwi->pos_y);
 				break;
 			}
 
-			case WID_VD_BUILD: // Build vehicle
+			case WID_D_BUILD: // Build vehicle
 				ResetObjectToPlace();
 				ShowBuildVehicleWindow(this->window_number, this->type);
 				break;
 
-			case WID_VD_CLONE: // Clone button
-				this->SetWidgetDirty(WID_VD_CLONE);
-				this->ToggleWidgetLoweredState(WID_VD_CLONE);
+			case WID_D_CLONE: // Clone button
+				this->SetWidgetDirty(WID_D_CLONE);
+				this->ToggleWidgetLoweredState(WID_D_CLONE);
 
-				if (this->IsWidgetLowered(WID_VD_CLONE)) {
+				if (this->IsWidgetLowered(WID_D_CLONE)) {
 					static const CursorID clone_icons[] = {
 						SPR_CURSOR_CLONE_TRAIN, SPR_CURSOR_CLONE_ROADVEH,
 						SPR_CURSOR_CLONE_SHIP, SPR_CURSOR_CLONE_AIRPLANE
@@ -702,7 +702,7 @@ struct DepotWindow : Window {
 				}
 				break;
 
-			case WID_VD_LOCATION:
+			case WID_D_LOCATION:
 				if (_ctrl_pressed) {
 					ShowExtraViewPortWindow(this->window_number);
 				} else {
@@ -710,20 +710,20 @@ struct DepotWindow : Window {
 				}
 				break;
 
-			case WID_VD_RENAME: // Rename button
+			case WID_D_RENAME: // Rename button
 				SetDParam(0, this->type);
 				SetDParam(1, Depot::GetByTile((TileIndex)this->window_number)->index);
 				ShowQueryString(STR_DEPOT_NAME, STR_DEPOT_RENAME_DEPOT_CAPTION, MAX_LENGTH_DEPOT_NAME_CHARS, this, CS_ALPHANUMERAL, QSF_ENABLE_DEFAULT | QSF_LEN_IN_CHARS);
 				break;
 
-			case WID_VD_STOP_ALL:
-			case WID_VD_START_ALL: {
+			case WID_D_STOP_ALL:
+			case WID_D_START_ALL: {
 				VehicleListIdentifier vli(VL_DEPOT_LIST, this->type, this->owner);
-				DoCommandP(this->window_number, (widget == WID_VD_START_ALL ? (1 << 0) : 0), vli.Pack(), CMD_MASS_START_STOP);
+				DoCommandP(this->window_number, (widget == WID_D_START_ALL ? (1 << 0) : 0), vli.Pack(), CMD_MASS_START_STOP);
 				break;
 			}
 
-			case WID_VD_SELL_ALL:
+			case WID_D_SELL_ALL:
 				/* Only open the confimation window if there are anything to sell */
 				if (this->vehicle_list.Length() != 0 || this->wagon_list.Length() != 0) {
 					TileIndex tile = this->window_number;
@@ -740,11 +740,11 @@ struct DepotWindow : Window {
 				}
 				break;
 
-			case WID_VD_VEHICLE_LIST:
+			case WID_D_VEHICLE_LIST:
 				ShowVehicleListWindow(GetTileOwner(this->window_number), this->type, (TileIndex)this->window_number);
 				break;
 
-			case WID_VD_AUTOREPLACE:
+			case WID_D_AUTOREPLACE:
 				DoCommandP(this->window_number, this->type, 0, CMD_DEPOT_MASS_AUTOREPLACE);
 				break;
 
@@ -761,11 +761,11 @@ struct DepotWindow : Window {
 
 	virtual bool OnRightClick(Point pt, int widget)
 	{
-		if (widget != WID_VD_MATRIX) return false;
+		if (widget != WID_D_MATRIX) return false;
 
 		GetDepotVehiclePtData gdvp = { NULL, NULL };
 		const Vehicle *v = NULL;
-		NWidgetBase *nwi = this->GetWidget<NWidgetBase>(WID_VD_MATRIX);
+		NWidgetBase *nwi = this->GetWidget<NWidgetBase>(WID_D_MATRIX);
 		DepotGUIAction mode = this->GetVehicleFromDepotWndPt(pt.x - nwi->pos_x, pt.y - nwi->pos_y, &v, &gdvp);
 
 		if (this->type == VEH_TRAIN) v = gdvp.wagon;
@@ -831,13 +831,13 @@ struct DepotWindow : Window {
 	virtual void OnPlaceObjectAbort()
 	{
 		/* abort clone */
-		this->RaiseWidget(WID_VD_CLONE);
-		this->SetWidgetDirty(WID_VD_CLONE);
+		this->RaiseWidget(WID_D_CLONE);
+		this->SetWidgetDirty(WID_D_CLONE);
 
 		/* abort drag & drop */
 		this->sel = INVALID_VEHICLE;
 		this->vehicle_over = INVALID_VEHICLE;
-		this->SetWidgetDirty(WID_VD_MATRIX);
+		this->SetWidgetDirty(WID_D_MATRIX);
 	}
 
 	virtual void OnMouseDrag(Point pt, int widget)
@@ -845,10 +845,10 @@ struct DepotWindow : Window {
 		if (this->type != VEH_TRAIN || this->sel == INVALID_VEHICLE) return;
 
 		/* A rail vehicle is dragged.. */
-		if (widget != WID_VD_MATRIX) { // ..outside of the depot matrix.
+		if (widget != WID_D_MATRIX) { // ..outside of the depot matrix.
 			if (this->vehicle_over != INVALID_VEHICLE) {
 				this->vehicle_over = INVALID_VEHICLE;
-				this->SetWidgetDirty(WID_VD_MATRIX);
+				this->SetWidgetDirty(WID_D_MATRIX);
 			}
 			return;
 		}
@@ -883,14 +883,14 @@ struct DepotWindow : Window {
 	virtual void OnDragDrop(Point pt, int widget)
 	{
 		switch (widget) {
-			case WID_VD_MATRIX: {
+			case WID_D_MATRIX: {
 				const Vehicle *v = NULL;
 				VehicleID sel = this->sel;
 
 				this->sel = INVALID_VEHICLE;
 				this->SetDirty();
 
-				NWidgetBase *nwi = this->GetWidget<NWidgetBase>(WID_VD_MATRIX);
+				NWidgetBase *nwi = this->GetWidget<NWidgetBase>(WID_D_MATRIX);
 				if (this->type == VEH_TRAIN) {
 					GetDepotVehiclePtData gdvp = { NULL, NULL };
 
@@ -911,7 +911,7 @@ struct DepotWindow : Window {
 				break;
 			}
 
-			case WID_VD_SELL: case WID_VD_SELL_CHAIN: {
+			case WID_D_SELL: case WID_D_SELL_CHAIN: {
 				if (this->IsWidgetDisabled(widget)) return;
 				if (this->sel == INVALID_VEHICLE) return;
 
@@ -921,7 +921,7 @@ struct DepotWindow : Window {
 				this->sel = INVALID_VEHICLE;
 				this->SetDirty();
 
-				int sell_cmd = (v->type == VEH_TRAIN && (widget == WID_VD_SELL_CHAIN || _ctrl_pressed)) ? 1 : 0;
+				int sell_cmd = (v->type == VEH_TRAIN && (widget == WID_D_SELL_CHAIN || _ctrl_pressed)) ? 1 : 0;
 				DoCommandP(v->tile, v->index | sell_cmd << 20 | MAKE_ORDER_BACKUP_FLAG, 0, GetCmdSellVeh(v->type));
 				break;
 			}
@@ -935,20 +935,20 @@ struct DepotWindow : Window {
 
 	virtual void OnTimeout()
 	{
-		if (!this->IsWidgetDisabled(WID_VD_SELL)) {
-			this->RaiseWidget(WID_VD_SELL);
-			this->SetWidgetDirty(WID_VD_SELL);
+		if (!this->IsWidgetDisabled(WID_D_SELL)) {
+			this->RaiseWidget(WID_D_SELL);
+			this->SetWidgetDirty(WID_D_SELL);
 		}
-		if (this->nested_array[WID_VD_SELL] != NULL && !this->IsWidgetDisabled(WID_VD_SELL_CHAIN)) {
-			this->RaiseWidget(WID_VD_SELL_CHAIN);
-			this->SetWidgetDirty(WID_VD_SELL_CHAIN);
+		if (this->nested_array[WID_D_SELL] != NULL && !this->IsWidgetDisabled(WID_D_SELL_CHAIN)) {
+			this->RaiseWidget(WID_D_SELL_CHAIN);
+			this->SetWidgetDirty(WID_D_SELL_CHAIN);
 		}
 	}
 
 	virtual void OnResize()
 	{
-		NWidgetCore *nwi = this->GetWidget<NWidgetCore>(WID_VD_MATRIX);
-		this->vscroll->SetCapacityFromWidget(this, WID_VD_MATRIX);
+		NWidgetCore *nwi = this->GetWidget<NWidgetCore>(WID_D_MATRIX);
+		this->vscroll->SetCapacityFromWidget(this, WID_D_MATRIX);
 		if (this->type == VEH_TRAIN) {
 			this->hscroll->SetCapacity(nwi->current_x - this->header_width - this->count_width);
 			nwi->widget_data = (this->vscroll->GetCapacity() << MAT_ROW_START) + (1 << MAT_COL_START);
@@ -962,7 +962,7 @@ struct DepotWindow : Window {
 	{
 		if (this->sel != INVALID_VEHICLE) {
 			_cursor.vehchain = _ctrl_pressed;
-			this->SetWidgetDirty(WID_VD_MATRIX);
+			this->SetWidgetDirty(WID_D_MATRIX);
 			return ES_HANDLED;
 		}
 
diff --git a/src/widgets/depot_widget.h b/src/widgets/depot_widget.h
--- a/src/widgets/depot_widget.h
+++ b/src/widgets/depot_widget.h
@@ -13,25 +13,25 @@
 #define WIDGETS_DEPOT_WIDGET_H
 
 /** Widgets of the WC_VEHICLE_DEPOT. */
-enum VehicleDepotWidgets {
-	WID_VD_CAPTION,         ///< Caption of window.
-	WID_VD_SELL,            ///< Sell button.
-	WID_VD_SHOW_SELL_CHAIN, ///< Show sell chain panel.
-	WID_VD_SELL_CHAIN,      ///< Sell chain button.
-	WID_VD_SELL_ALL,        ///< Sell all button.
-	WID_VD_AUTOREPLACE,     ///< Autoreplace button.
-	WID_VD_MATRIX,          ///< Matrix of vehicles.
-	WID_VD_V_SCROLL,        ///< Vertical scrollbar.
-	WID_VD_SHOW_H_SCROLL,   ///< Show horizontal scrollbar panel.
-	WID_VD_H_SCROLL,        ///< Horizontal scrollbar.
-	WID_VD_BUILD,           ///< Build button.
-	WID_VD_CLONE,           ///< Clone button.
-	WID_VD_LOCATION,        ///< Location button.
-	WID_VD_SHOW_RENAME,     ///< Show rename panel.
-	WID_VD_RENAME,          ///< Rename button.
-	WID_VD_VEHICLE_LIST,    ///< List of vehicles.
-	WID_VD_STOP_ALL,        ///< Stop all button.
-	WID_VD_START_ALL,       ///< Start all button.
+enum DepotWidgets {
+	WID_D_CAPTION,         ///< Caption of window.
+	WID_D_SELL,            ///< Sell button.
+	WID_D_SHOW_SELL_CHAIN, ///< Show sell chain panel.
+	WID_D_SELL_CHAIN,      ///< Sell chain button.
+	WID_D_SELL_ALL,        ///< Sell all button.
+	WID_D_AUTOREPLACE,     ///< Autoreplace button.
+	WID_D_MATRIX,          ///< Matrix of vehicles.
+	WID_D_V_SCROLL,        ///< Vertical scrollbar.
+	WID_D_SHOW_H_SCROLL,   ///< Show horizontal scrollbar panel.
+	WID_D_H_SCROLL,        ///< Horizontal scrollbar.
+	WID_D_BUILD,           ///< Build button.
+	WID_D_CLONE,           ///< Clone button.
+	WID_D_LOCATION,        ///< Location button.
+	WID_D_SHOW_RENAME,     ///< Show rename panel.
+	WID_D_RENAME,          ///< Rename button.
+	WID_D_VEHICLE_LIST,    ///< List of vehicles.
+	WID_D_STOP_ALL,        ///< Stop all button.
+	WID_D_START_ALL,       ///< Start all button.
 };
 
 #endif /* WIDGETS_DEPOT_WIDGET_H */