Closing a Curses Window???

[Adam Tauno Williams]

I'm uses the curses module of Python to create a TUI.  I can create
windows, and subwindows, but I can't find anything on deleting or
disposing of a a subwindow.

<http://docs.python.org/library/curses.html>
<http://www.amk.ca/python/howto/curses/curses.html>

How do I get rid of a subwindow?