Dear Mr. D:

You wrote:

> I’d like to find out how Grammar Slammer with Checkers works. Does it replace the grammar checker
> that Word uses or is this a separate reference guide?
>
Grammar Slammer is a separate reference guide. Sometimes the grammar checker
will ask you questions or give directions that you are not sure about. Use
Grammar Slammer to find out what to do. Also good for teaching and learning
grammar, letter writing, and usage difficulties. Grammar Slammer Deluxe with Checkers contains all this
plus full-featured grammar and spelling checkers you can use with most Windows editors including Word.

Try downloading a trial copy from our download page at https://englishplus.com/pub/ to see what they contain and what they can do for you.