Dvarhalacha

We are beginning siman 3. The Chayei Adam writes that cutting letters from a piece of hide or leather is included in the issur deoraysa of koseiv. However, rosheim, which is using a blunt instrument to make impressions in leather (without cutting it), is not chayav. The reason one is not chayav is because nothing

  We have finished siman 1, and need to clarify one point. The Chayei Adam wrote that reshima is chayav. The Gemara explains that reshima refers to making a symbol as a signature instead of writing one’s name. For example, Rav would make a picture of a fish instead of signing his name. This symbol