OK so why Windows is unable to know I don't really want lower case letters when I hit shift when Caps lock is on and I don't realise it. 30 years ago CP/M was clever enough to know :>(€.
OK rant over start of request. It would be great to have an equivalent function to Shift F3 in MS Word in the WP editor. This function allows you to swap selected text between all upper case, all lower case and first letter capitalisation.