How long does a knot have to be tied to be considered a "קשר של קימא". (Knot of permanence).
how to Apply the Melacha of 'מכה בפטיש' (Final Action);
Folding Garments on Shabbos, קיפול בגדים (Kipul Begadim). How הכנה (Hachana) Has to Do With Folding Garments on Shabbos;