Many have said they didn't know about this method. Once it is learned, it's so convenient as to be an absolute show-stopper to lose it. To use rough analogy, I could more easily learn the ridiculous "downward swipe" of Metro, because (on metro-side) it does not yet have a control box appearing to be...

Last time I tried ReactOS about 2 years ago, I could not close any windows using the classical method. This allows faster closing by allowing closure on either side (Left-side double-click AND Right-side X, whichever is closer). Every version of Windows allows closing a window by double-clicking the...