diff --git a/redo/area_darwin.go b/redo/area_darwin.go
index 1d715ac..ba466e1 100644
--- a/redo/area_darwin.go
+++ b/redo/area_darwin.go
@@ -31,12 +31,12 @@ func newArea(ab *areabase) Area {
 func (a *area) SetSize(width, height int) {
 	a.width = width
 	a.height = height
-	// TODO different?
+	// set the frame size to set the area's effective size on the Cocoa side
 	C.moveControl(a._id, 0, 0, C.intptr_t(a.width), C.intptr_t(a.height))
 }
 
 func (a *area) RepaintAll() {
-	C.display(a._id)
+	C.areaRepaintAll(a._id)
 }
 
 //export areaView_drawRect
diff --git a/redo/area_darwin.m b/redo/area_darwin.m
index 10fbbd8..1a9c7eb 100644
--- a/redo/area_darwin.m
+++ b/redo/area_darwin.m
@@ -176,8 +176,8 @@ uintptr_t keyCode(id e)
 	return (uintptr_t) ([toNSEvent(e) keyCode]);
 }
 
-// TODO move to common_darwin.m?
-void display(id view)
+// TODO is this the best way? see if we can mark a rect for repaint
+void areaRepaintAll(id view)
 {
 	[toNSView(view) display];
 }
diff --git a/redo/objc_darwin.h b/redo/objc_darwin.h
index 566e190..9962c4e 100644
--- a/redo/objc_darwin.h
+++ b/redo/objc_darwin.h
@@ -102,6 +102,6 @@ extern intptr_t buttonNumber(id);
 extern intptr_t clickCount(id);
 extern uintptr_t pressedMouseButtons(void);
 extern uintptr_t keyCode(id);
-extern void display(id);
+extern void areaRepaintAll(id);
 
 #endif