I've been thinking about how memos work in highly structured organizations. When you're cc'd on a memo as CEO you like to see up front if there are no action items for you below, that this is just an FYI thing. I never had the time to read every sentence in every memo I was cc'd on, nor would it be appropriate. Everyone had to learn to be clear about the presence of action items below before starting their narrative. Just putting an FYI at the top with a short list of people who have to act. Most memos, I found were totally informational, ie contained no action items for anyone.