I would first of all just like to thank the Calibre team (kovidgoyal) for all the work and effort put into this great program.
Would it be possible to add a "undo" feature to Calibre? I occasionally type keyboard letters when it is highlighted on a Author or book title and mistakenly erases the title of the ebook. I then have to retype the title of the book back in. An "undo" feature would come in handy for my careless mistakes
