For me, understanding how to insert a superscript 2 for m² was one of those little niggly things which drags on and on because 'I will google it at some point, but just haven't gotten round to it yet'. Well, I finally got round to it and thought I'd share.
- Type m2
- Highlight the 2
- Press and hold the [Alt] key then type the figures 0178 - you must use numeric keypad.
- you should now have turned m2 into m²