Yesterday, I was trying to format a sentence as italics. I pressed cmd-I. Or I thought I did, but apparently I pressed something else and the whole sentence vanished. I pressed cmd-Z to get it back, and ever since then, I can’t format anything in that chapter as italics–the command’s greyed out in the menu, too. Any idea how I messed this up and how I can fix it?
Hi,
It sounds as though you have changed to a font that doesn’t support italics, such as Lucida Grande. Try selecting all the text and changing the font (call up the font panel by hitting cmd-T or by going to Text > Font > Show Fonts) to whatever you usually use (such as Optima, Times New Roman or whatever).
Hope that helps.
All the best,
Keith
Thank you! That was indeed what happened. But I didn’t consciously change the font. I wonder how that happened? Anyway, I changed it back and that solved the problem. Yay! 
I’ve been having the same problem; I have no idea how I changed the font. Glad I came here to see what it could be!