I've been playing Skyrim for a few weeks now, and I understand everything regarding major game play, map icons, how to tag missions (quests), etc. However, I'm curious what the celtic scroll work that book-ends the quest names means. Some of them are clear, the ones that look like dragons... well, that would likely be a main story quest. This may be painfully obvious for some, but I don't know what each one means... any help?