Also see: Primary System
The selyn storage area that all simes, Channels and renSimes alike possess. (See also, Secondary Selyn System) The primary system supports the sime's personal metabolic functions. It's also used to control the channel's Secondary Selyn System.
The Primary System is for personal Need and is utilized in the same manner that a renSime uses stored selyn, to maintain life's metabolic functions. The Secondary System is present only in channels and is not found in renSimes, and is for storing selyn that Gens donate to channels. The channel uses the selyn transport system to pass donated selyn on to renSimes in transfer so that the renSimes never feel the Need to seek their selyn from Gens.