A part of the wall that is made to remove (e.g., a Pesach kitchen).
Is One Allowed to Put a Tissue over a Cup That a Fly Flew Into? Is There Any Problem with Closing Doors or Windows...
to clog a small crack in a pipe. Turning off gas range. Putting on, taking off smoke detector. Unscrewing the bulb that's off;
Is there a problem with unfolding clothing (e.g., TALIS, pants, etc.) on Shabbos and folding a paper napkin on a line;