diff --git a/uppsrc/CtrlCore/CocoCreate.mm b/uppsrc/CtrlCore/CocoCreate.mm
index ef7f74b14..ecfe2d590 100644
--- a/uppsrc/CtrlCore/CocoCreate.mm
+++ b/uppsrc/CtrlCore/CocoCreate.mm
@@ -225,6 +225,10 @@ void Upp::TopWindow::Open(Ctrl *owner)
 	SyncCaption();
 	SyncSizeHints();
 	PlaceFocus();
+	if(state == MAXIMIZED)
+		Maximize();
+	if(state == MINIMIZED)
+		Minimize();
 //	if(top)
 //		top->placefocus = true;
 }
@@ -315,4 +319,36 @@ void Upp::TopWindow::SerializePlacement(Stream& s, bool reminimize)
 		SetRect(rect);
 }
 
+void Upp::TopWindow::Maximize(bool effect)
+{
+	state = MAXIMIZED;
+	if(top && top->coco && top->coco->window && !top->coco->window.zoomed) {
+		if(effect)
+			[top->coco->window performZoom:top->coco->window];
+		else
+			[top->coco->window zoom:top->coco->window];
+	}
+}
+
+void Upp::TopWindow::Minimize(bool effect)
+{
+	state = MINIMIZED;
+	if(top && top->coco && top->coco->window && !top->coco->window.miniaturized) {
+		if(effect)
+			[top->coco->window performMiniaturize:top->coco->window];
+		else
+			[top->coco->window miniaturize:top->coco->window];
+	}
+}
+
+void Upp::TopWindow::Overlap(bool effect)
+{
+	state = OVERLAPPED;
+	if(top && top->coco && top->coco->window && top->coco->window.zoomed)
+		[top->coco->window zoom:top->coco->window];
+	if(top && top->coco && top->coco->window && top->coco->window.miniaturized)
+		[top->coco->window deminiaturize:top->coco->window];
+}
+
+
 #endif
diff --git a/uppsrc/CtrlCore/CocoTop.cpp b/uppsrc/CtrlCore/CocoTop.cpp
index cae3a162f..a69a5f5d4 100644
--- a/uppsrc/CtrlCore/CocoTop.cpp
+++ b/uppsrc/CtrlCore/CocoTop.cpp
@@ -6,27 +6,11 @@ NAMESPACE_UPP
 
 #define LLOG(x)  // LOG(x)
 
-void TopWindow::Minimize(bool effect)
-{
-	state = MINIMIZED;
-}
-
 TopWindow& TopWindow::FullScreen(bool b)
 {
 	return *this;
 }
 
-void TopWindow::Maximize(bool effect)
-{
-	state = MAXIMIZED;
-}
-
-void TopWindow::Overlap(bool effect)
-{
-	GuiLock __;
-	state = OVERLAPPED;
-}
-
 TopWindow& TopWindow::TopMost(bool b, bool stay_top)
 {
 	GuiLock __;
diff --git a/uppsrc/CtrlCore/cocotodo.txt b/uppsrc/CtrlCore/cocotodo.txt
index 1f165a382..9c06d7339 100644
--- a/uppsrc/CtrlCore/cocotodo.txt
+++ b/uppsrc/CtrlCore/cocotodo.txt
@@ -1,7 +1,5 @@
 sooner:
 
-- replacement fonts
-- minimize, maximaze
 - fix package organiser link options (joining link options missing space)
 
 - implement missing Draw ops
@@ -30,14 +28,16 @@ later:
 
 - keynames apple style
 
-- Mac menu
-- Clipboard types
-- Drag&Drop
-- System colors
-- Chameleon
+* Mac menu
+* Clipboard types
+* Drag&Drop
+* System colors
+* Chameleon
 
 done:
 
+- replacement fonts
+- minimize, maximaze
 - void WakeUpGuiThread(void)
 - not all additional cursors are correct
 - ignoreclick