No doubt at some time you have, like me, pressed the caps lock key instead of the shift key and all the text goes topsy turvy. There is a way to conquer this by using the f3 key plus a combination of other keys which allows you to toggle through the options. Unfortunately I have forgotten the combination.
Easy ! Go to the first letter and change in manually them highlight it . Then select paint brush symbol FORMAT PAINTER. Scroll over entire text hold down mouse and release. Thext will be the same as first letter.