I am a calm person. Most of the time anyway. But there is one thing that causes me to spew forth vitriol, obscenities and rage. It causes me to look for a coffee mug to hurl at my screen and for suitably fragile windows to violently throw that screen through. Close, escape, X or undo simply cannot be acceptable alternatives when this happens (if they even work at all). Clearly, I am talking about when I encounter aÂ bad user interface.