When she’d finished writing, she put the clipboard back.  Reaching under her squeaky-wheeled cart, she pulled a small bed-tray out and set it across the his chest, finally setting the tray on top and pulling the cover off with her teeth.  Then she slid a leg under his back and pushed up slightly, clearly indicating that he should sit up.  As soon as he had, he heard a few clicks behind him and the leg was withdrawn; like most hospital beds, this one had some kind of mechanism to convert it into a sort-of chair.