diff --git a/redo/objectimpl b/redo/objectimpl
new file mode 100644
index 00000000..84bd57ca
--- /dev/null
+++ b/redo/objectimpl
@@ -0,0 +1,39 @@
+destroy
+	if there is a parent
+		complain
+	commit destroy
+handle
+	[implemented by OS]
+get parent
+	return parent variable
+set parent
+	assign parent variable
+	commit set parent
+container visible
+	if hidden
+		return false
+	if no parent
+		return true
+	return container visible of parent
+container enabled
+	same as above
+@include shed
+
+commit destroy
+	[implemented by OS]
+commit set parent
+	[implemented by OS]
+preferred size
+	[implemented by OS]
+resize
+	[implemented by OS]
+queue resize
+	[implemented by OS]
+sizing
+	[implemented by OS]
+commit show/hide/enable/disable
+	[implemented by OS]
+sys func
+	[implemented by OS]
+start z order
+	[implemented by OS]