A method for managing stock so that a merchant who provides both on-line and in-person shopping may dependably advise an on-line shopper regarding availability of an item. More particularly, this invention relates to a surgical snare instrument for excising polyps. a rudder of a ship or a wheel of a vehicle. The first subscriber station has a lower geometry than the second subscriber station. The cam also provides a service mode position for the stack height arm which lifts it out of the way of the paper supply when it is opening.