If you are like me, you will find this tip very helpful, but will need it so infrequently that you will forget it. So this is one you might wish to post near your computer.
This is for those annoying times when you have been typing for several seconds, or even minutes, and then find you have had your Caps Lock on. Arrgh! By selecting the area and pressing shift and F3, you will magically reverse all the letters. Presto! All better. One of my favorite fixes.