The spellchecker using the MS Word dictionary works quite well, but I had hoped that the 2017 version of Studio would come with an Undo function. When spellchecking there is a lot of "Ignore All", and it is very easy to make a mistake, especially if the on-screen buttons are a little "sticky". When you realize that the moment you have done it that you have made a mistake, it would be a godsend to have an undo button. The undo function of Studio itself can be used, but it is cumbersome, and doesn't necessarily return you to where you were.

Another irritating thing about the spellchecker is that the top suggestion is automatically entered in the "Change to" field. I would like to have the "Not in dictionary" entry entered in the "Change to" field, or at least have that option.