Button to generate a word list from a particular book

It would be nice to have a way to easily generate a list of the unique words included in a particular book.

Such a list could be used to help determine which words might be eliminated if a book has too many unique words. The list could also be an aid to editors and writers, especially if it is sorted alphabetically, as spelling inconsistencies would be more evident.

Maybe there could be a bottom like “Copy Book Stats” that would instead be called “Create Word List From Book”.

It might also list all of the graphemes actually used in a book. Or that could be a separate button.