Various ways to do an act of erasing.
Snapping with One's Fingers on Shabbos and Banging with One's Fingers on the Ground or on a Table;
(Temporary Ohel) How do these halachas work in conjunction with an awning (Outside overhead covering);
(Squeezing materials.) two very important pointers to keep in mind when using pre-cut paper towels, napkins, rags, etc.