Fingerprints; invisible ink; writing on one skin; x-rays.
Introduction to the Melacha of מבעיר Part 2. (Also Important Information in Reference to Suntanning on Shabbos);
Putting Salt into Cholent, Soup, Etc., and Pieces of Radish, Onion, Garlic, Etc.: Eating Right Away;
(Temporary Ohel) Using the process of flipping the order, in order to put a covering on a baby carriage;