You all know how to save and quit a file in vim. I see most people using :wq! every time. I’m not quite happy with this.
Kurt Keller's Blog
tech notes and more
Quite obviously, there are people who do not know about the undo and redo functions when editing in vim. That’s a pity, because it is really helpful. I frequently use this when testing the effects of some small changes in configuration files or scripts;