Charles,
I am sorry to disagree with you but it was an option in previous versions.
I set it up and used it for all my work when studying for my degree. It was a long time ago and I can remember setting it up because it was something I had never done before. It was under the grammar & spelling options to the best of my recollection. Believe
me if I had to adjust my course work manually every time I would have remembered :-).
I can understand if Microsoft have removed the feature, that is their choice and I'm sure I'll cope without it. It did make reading easier for those of us with less than perfect eyesight.
Thank you for taking the time to reply and I'm sorry it has taken so long to reply
cheers,
Rob