   Need Help with Word 2007
  Hi guys!  This is a strange question, but I really need some help.  I've been typing up notes from my math class, and I've hit a snag:  the logical negation operator (which Word terms an "option hyphen") will not correct display in my document.  Specifically, if I click to insert it, it gets inserted but it is completely invisible.  If I insert two, I need to backspace two times to get past it but I cannot see the character, and physically it looks like it isn't taking up any space in the document.Since the course is on mathematical logic, not being able to use the negation operator properly when typing is going to be a real pain.  Any help would be most appreciated!   
  Have you tried a different font? Perhaps it's not available in Calibri.   ;  Thanks for the suggestion, but even after trying a few different fonts, it still won't show up.  =(   ;  Hmm...that is strange - I can reproduce that. Looks like a bug?Maple has a fantastic font which has all the mathematical symbols, which includes the logical not. I can give this to you if you would like...although I'm not sure if this is legal? Let me know...Cheers   ;  That isn't the *actual* symbol; an "optional hyphen" is a normally-zero-width character that's intended to indicate, as you might guess, an *optional* *hyphen*. I.e., something that doesn't appear when the word is in the middle of a line, but is a legal point to break the word (and insert a hyphen) in order to wrap to the next line. This sort of thing can be very useful in typography when you don't yet know how things are going to wrap - you can put them at acceptable positions, and then play with the column width to your heart's content.If you want the mathematical symbol, copying and pasting it from charmap works for me. You can also use its keystroke, Alt+0172.   ;  Thank you all so very much!!!   