How long does a knot have to be tied to be considered a "קשר של קימא". (Knot of permanence).
Making a "ROSHIM" (mark) on paper, on a page in a sefer.
open and closed metal cans, e.g. tuna fish cans, sardine cans, etc. Part 2;
(Temporary Ohel) What to do with an umbrella that somebody forgot to close;