And no, I don't mean the web comic by Terrance and Isabel Marks. As I mentioned a few days ago, a piece of my CPAP mask did not return from the Chicago area with me. The hotel says it didn't turn up in the room. I managed to find a company that sells the spare parts and ordered it. To my surprise, the part turned up already in today's mail. Hooray! I can sleep much more comfortably with the headpiece properly braced again.