Index: src/lang/english.txt
===================================================================
--- src/lang/english.txt	(revision 27929)
+++ src/lang/english.txt	(working copy)
@@ -237,7 +237,7 @@
 STR_BUTTON_RENAME                                               :{BLACK}Rename
 
 STR_TOOLTIP_CLOSE_WINDOW                                        :{BLACK}Close window
-STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS                              :{BLACK}Window title - drag this to move window
+STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS                              :{BLACK}Window title - drag this to move window. Ctrl+Click to store current position as default
 STR_TOOLTIP_SHADE                                               :{BLACK}Shade window - only show the title bar
 STR_TOOLTIP_DEBUG                                               :{BLACK}Show NewGRF debug information
 STR_TOOLTIP_DEFSIZE                                             :{BLACK}Resize window to default size. Ctrl+Click to store current size as default
Index: src/lang/english_US.txt
===================================================================
--- src/lang/english_US.txt	(revision 27929)
+++ src/lang/english_US.txt	(working copy)
@@ -237,7 +237,7 @@
 STR_BUTTON_RENAME                                               :{BLACK}Rename
 
 STR_TOOLTIP_CLOSE_WINDOW                                        :{BLACK}Close window
-STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS                              :{BLACK}Window title - drag this to move window
+STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS                              :{BLACK}Window title - drag this to move window. Ctrl+Click to store current position as default
 STR_TOOLTIP_SHADE                                               :{BLACK}Shade window - only show the title bar
 STR_TOOLTIP_DEBUG                                               :{BLACK}Show NewGRF debug information
 STR_TOOLTIP_DEFSIZE                                             :{BLACK}Resize window to default size. Ctrl+Click to store current size as default
Index: src/table/window_settings.ini
===================================================================
--- src/table/window_settings.ini	(revision 27929)
+++ src/table/window_settings.ini	(working copy)
@@ -50,6 +50,20 @@
 min      = 0
 max      = 32000
 
+[SDT_VAR]
+var      = pref_left
+type     = SLE_INT16
+def      = -1
+min      = -32000
+max      = 32000
+
+[SDT_VAR]
+var      = pref_top
+type     = SLE_INT16
+def      = -1
+min      = -1
+max      = 32000
+
 [SDT_END]
 
 };
Index: src/window.cpp
===================================================================
--- src/window.cpp	(revision 27929)
+++ src/window.cpp	(working copy)
@@ -101,6 +101,8 @@
 	pref_sticky(false),
 	pref_width(0),
 	pref_height(0),
+	pref_left(-1),
+	pref_top(-1),
 	default_width_trad(def_width_trad),
 	default_height_trad(def_height_trad)
 {
@@ -691,7 +693,17 @@
 			return;
 
 		case WWT_CAPTION: // 'Title bar'
-			StartWindowDrag(w);
+			if (_ctrl_pressed) {
+				if (_shift_pressed) {
+					w->window_desc->pref_left = -1;
+					w->window_desc->pref_top = -1;
+				} else {
+					w->window_desc->pref_left = w->left;
+					w->window_desc->pref_top = w->top;
+				}
+			} else {
+				StartWindowDrag(w);
+			}
 			return;
 
 		case WWT_RESIZEBOX:
@@ -1702,12 +1714,16 @@
  */
 static Point LocalGetWindowPlacement(const WindowDesc *desc, int16 sm_width, int16 sm_height, int window_number)
 {
-	Point pt;
+	Point pt = { desc->pref_left, desc->pref_top };
 	const Window *w;
 
 	int16 default_width  = max(desc->GetDefaultWidth(),  sm_width);
 	int16 default_height = max(desc->GetDefaultHeight(), sm_height);
 
+	if (pt.y >= 0 && pt.y < _screen.height &&
+			pt.x >= 10-default_width && pt.x < _screen.width-10)
+		return pt;
+
 	if (desc->parent_cls != 0 /* WC_MAIN_WINDOW */ &&
 			(w = FindWindowById(desc->parent_cls, window_number)) != NULL &&
 			w->left < _screen.width - 20 && w->left > -60 && w->top < _screen.height - 20) {
Index: src/window_gui.h
===================================================================
--- src/window_gui.h	(revision 27929)
+++ src/window_gui.h	(working copy)
@@ -185,6 +185,8 @@
 	bool pref_sticky;              ///< Preferred stickyness.
 	int16 pref_width;              ///< User-preferred width of the window. Zero if unset.
 	int16 pref_height;             ///< User-preferred height of the window. Zero if unset.
+	int16 pref_left;
+	int16 pref_top;
 
 	int16 GetDefaultWidth() const;
 	int16 GetDefaultHeight() const;