Provide a builtin "Recall" message to all objects created by the New Window function.
The Recall message should traverse the whole display tree and revert the state of all display boxes to the last state recorded state when the window was closed last time or when a "Store Window State" message was sent. The exact behaviour should be configurable when constructing the window.
The behaviour should mimic the behaviour of Recall functionality in the platforms with a minimum of coding effort.