"The K Desktop Environment's window manager KWin has long prided
itself on its configurability. But is it getting too
"Really, you can do almost anything with the windows KWin
displays. Here's a humble example. Let's say you want to underline
the window title and go from this...
"Yes, there's a control for it! Here's all you do:
* Right-click the title bar.
* Choose Configure Window Behaviour.
* Select Windows (on the left).
* Click on the Fine Tuning tab (under Decoration Options).
* Tick Draw separator between title bar and active window