Icons for minimized windows

Backstep is a program that draws icons for minimized windows on your desktop. It doesn't depend on the window manager or on a desktop-drawing program (for example, I use it with Nautilus). It is meant to work with window managers that are EWHM compliant. However, I only know for sure that it works with Metacity and Xfwm4. And I know that it doesn't work with Fluxbox and that it only partially works with Kwin (hopefully this will be corrected soon). I haven't yet tested it with other window managers.

Drawing icons for minimized windows on the desktop might be considered a step backwards by many people (hence the name), but I find it useful to identify minimized windows by position rather than by name.