diff -r 4004b8f65547 src/lang/english.txt
--- a/src/lang/english.txt	Fri Mar 19 22:46:22 2010 +0000
+++ b/src/lang/english.txt	Sat Mar 20 10:07:43 2010 +0100
@@ -3104,6 +3104,8 @@
 
 STR_ORDERS_DELETE_BUTTON                                        :{BLACK}Delete
 STR_ORDERS_DELETE_TOOLTIP                                       :{BLACK}Delete the highlighted order
+STR_ORDERS_STOP_SHARING_BUTTON                                  :{BLACK}Stop sharing
+STR_ORDERS_STOP_SHARING_TOOLTIP                                 :{BLACK}Stop sharing the order list. Ctrl+Click also deletes the order list
 
 STR_ORDERS_GO_TO_BUTTON                                         :{BLACK}Go To
 STR_ORDER_GO_TO_NEAREST_DEPOT                                   :Go to nearest depot
@@ -3626,6 +3628,7 @@
 STR_ERROR_CAN_T_ADD_ORDER_SHARED                                :{WHITE}... a vehicle sharing this order can't go to that station
 
 STR_ERROR_CAN_T_SHARE_ORDER_LIST                                :{WHITE}Can't share order list...
+STR_ERROR_CAN_T_STOP_SHARING_ORDER_LIST                         :{WHITE}Can't stop sharing order list...
 STR_ERROR_CAN_T_COPY_ORDER_LIST                                 :{WHITE}Can't copy order list...
 STR_ERROR_TOO_FAR_FROM_PREVIOUS_DESTINATION                     :{WHITE}... too far from previous destination
 
diff -r 4004b8f65547 src/order_cmd.cpp
--- a/src/order_cmd.cpp	Fri Mar 19 22:46:22 2010 +0000
+++ b/src/order_cmd.cpp	Sat Mar 20 10:07:43 2010 +0100
@@ -1165,8 +1165,8 @@
  * @param flags operation to perform
  * @param p1 various bitstuffed elements
  * - p1 = (bit  0-15) - destination vehicle to clone orders to (p1 & 0xFFFF)
- * - p1 = (bit 16-31) - source vehicle to clone orders from, if any (none for CO_UNSHARE)
- * @param p2 mode of cloning: CO_SHARE, CO_COPY, or CO_UNSHARE
+ * - p1 = (bit 16-31) - source vehicle to clone orders from, if any (none for CO_UNSHARE and CO_STOP_SHARING)
+ * @param p2 mode of cloning: CO_SHARE, CO_COPY, CO_UNSHARE or CO_STOP_SHARING
  * @param text unused
  * @return the cost of this operation or an error
  */
@@ -1283,6 +1283,16 @@
 		} break;
 
 		case CO_UNSHARE: return DecloneOrder(dst, flags);
+
+		case CO_STOP_SHARING: {
+			/* Stops sharing the vehicle order list, that is CO_COPY the order list of another shared vehicle. */
+			if (!dst->IsOrderListShared()) return CMD_ERROR;
+
+			Vehicle *src = (dst->FirstShared() == dst) ? dst->NextShared() : dst->PreviousShared();
+
+			return CmdCloneOrder(tile, flags, veh_dst | (src->index << 16), CO_COPY, text);
+		} break;
+
 		default: return CMD_ERROR;
 	}
 
diff -r 4004b8f65547 src/order_gui.cpp
--- a/src/order_gui.cpp	Fri Mar 19 22:46:22 2010 +0000
+++ b/src/order_gui.cpp	Sat Mar 20 10:07:43 2010 +0100
@@ -652,16 +652,25 @@
 
 	/**
 	 * Handle the click on the delete button.
+	 * If 'End Of Shared Orders' is selected, only stops sharing orders. Otherwise, delete selected order or order list.
 	 * @param i Dummy parameter.
 	 */
 	void OrderClick_Delete(int i)
 	{
-		/* When networking, move one order lower */
-		int selected = this->selected_order + (int)_networking;
-
-		if (DoCommandP(this->vehicle->tile, this->vehicle->index, this->OrderGetSel(), CMD_DELETE_ORDER | CMD_MSG(STR_ERROR_CAN_T_DELETE_THIS_ORDER))) {
-			this->selected_order = selected >= this->vehicle->GetNumOrders() ? -1 : selected;
-			this->UpdateButtonState();
+		if (!_ctrl_pressed && this->vehicle->IsOrderListShared() && this->selected_order == this->vehicle->GetNumOrders()) {
+			/* Clicked (not Ctrl+Click) delete button with 'End Of Shared Orders' selected. */
+			if (DoCommandP(this->vehicle->tile, this->vehicle->index, CO_STOP_SHARING, CMD_CLONE_ORDER | CMD_MSG(STR_ERROR_CAN_T_STOP_SHARING_ORDER_LIST))) {
+				this->selected_order = this->vehicle->GetNumOrders();
+				this->UpdateButtonState();
+			}
+		} else {
+			/* Clicked delete button with any order selected or Ctrl-Clicked with 'End Of Shared Orders' selected. */
+			if (DoCommandP(this->vehicle->tile, this->vehicle->index, this->OrderGetSel(), CMD_DELETE_ORDER | CMD_MSG(STR_ERROR_CAN_T_DELETE_THIS_ORDER))) {
+				/* When networking, move one order lower */
+				int selected = this->selected_order + (int)_networking;
+				this->selected_order = selected >= this->vehicle->GetNumOrders() ? -1 : selected;
+				this->UpdateButtonState();
+			}
 		}
 	}
 
@@ -813,9 +822,18 @@
 		/* skip */
 		this->SetWidgetDisabledState(ORDER_WIDGET_SKIP, this->vehicle->GetNumOrders() <= 1);
 
-		/* delete */
-		this->SetWidgetDisabledState(ORDER_WIDGET_DELETE,
+		/* delete / stop sharing */
+		NWidgetCore *delete_btn = this->GetWidget<NWidgetCore>(ORDER_WIDGET_DELETE);
+		if (this->vehicle->IsOrderListShared() && this->selected_order == this->vehicle->GetNumOrders()) {
+			/* 'Stop Sharing' button */
+			delete_btn->SetDataTip(STR_ORDERS_STOP_SHARING_BUTTON, STR_ORDERS_STOP_SHARING_TOOLTIP);
+			this->SetWidgetDisabledState(ORDER_WIDGET_DELETE, false);
+		} else {
+			/* 'Delete' button */
+			delete_btn->SetDataTip(STR_ORDERS_DELETE_BUTTON, STR_ORDERS_DELETE_TOOLTIP);
+			this->SetWidgetDisabledState(ORDER_WIDGET_DELETE,
 				(uint)this->vehicle->GetNumOrders() + ((shared_orders || this->vehicle->GetNumOrders() != 0) ? 1 : 0) <= (uint)this->selected_order);
+		}
 
 		/* First row. */
 		this->RaiseWidget(ORDER_WIDGET_FULL_LOAD);
diff -r 4004b8f65547 src/order_type.h
--- a/src/order_type.h	Fri Mar 19 22:46:22 2010 +0000
+++ b/src/order_type.h	Sat Mar 20 10:07:43 2010 +0100
@@ -165,7 +165,8 @@
 enum {
 	CO_SHARE   = 0,
 	CO_COPY    = 1,
-	CO_UNSHARE = 2
+	CO_UNSHARE = 2,
+	CO_STOP_SHARING = 3,
 };
 
 struct Order;