Carbon monoxide( CO) is a colorless, odorless gas produced by incomplete combustion of fuels or other material containing carbon.
They are often given incomplete, confusing, and sometimes contradictory instructions and are forced to make significant decisions about the user experience with little time or background.
Blocking: (1) To make an impression on paper or board from a block which are heated and a foil is used. Called Hot stamping in America. (2) A serious fault where stack of printed sheets stick together by the ink or varnish due to incomplete drying.
