I discovered, perhaps unsurprisingly, that it's possible to
create a module that defines window groups consisting of windows
defined in other modules, even (and that's the most fun part)
windows over which you normally have no control, e.g., the windows
defined in the NetBeans Platform itself, such as the Properties
window, the Favorites window, and the Output window. Once you have
defined a window group consisting of some of your own windows, plus
some windows from the...