This invention presents a novel way in which electronic communication can be carried out, wherein the context of the communication is established by negotiation between the sender and receiver, whereby the communication can be properly categorized and filed. Also disclosed are pharmaceutical compositions containing such compounds and methods for using these compounds in the treatment of HCV infection. If a volume of search queries for a given search term in a period of time exceeds an expected volume, search queries for that term are discarded. Each of the panels is easily removed from the suction housing to facilitate cleaning and removal of material residue after use, as well as maintenance and repair of the pump. In a preferred aspect the frame alignment means comprises clip holes and dowels, and the connection maintenance means comprises a front and back U shaped clip having opposite ends which are received in the clip holes, one clip hole in an outer edge of each jamb side portion.