Not really....the Sheet Notes section supports line breaks, but the Notes section for each Power/Ability doesn't.
A thread was going a while ago about some feature requests for the 13A Char Sheet, but I don't think anything has come of it yet.
http://gamersplane.com/forums/thread/4467/
Also, I'm looking at playing Bog, a Gnome Paladin. He's quite grubby (his OUT is that he cannot stay clean....think Pigpen from Charlie Brown), but the Elf Queen's niece took a liking to him and he was her favored consort until she passed away. Freed from his obligations to the Elven court, he ........ not sure where to take this yet, but it'll be my character's tie-in into the storyline.