various examples of double knots and single knots at the end of a bag.
ממצוא חפציך (Mimtzo Cheftzecha): Reading Various Manuals or Literature on Shabbos;
Addition 1 to 1478: The איסור (Issur) of Running and Taking Large Steps on Shabbos;
Biting One's Nails and Removing a Broken Nail;