KDE4 maximize button tricks

It turns out, if you middle click the maximize button on a window in KDE4, it'll set the window to maximized vertically. If you then drag the window to a different desktop with different dimensions, it will auto-resize to match the new max-height. The same goes for width and right clicking this button. Just don't forget how you set this because the setting appears to be stored somewhere and is super annoying when it isn't clear how to turn it off.