 manual.  A system that integrates its help
     system with the actual working of the program is very
     rare.  In some better cases, the help system is only
     text associated with the operations being performed
     so that context sensitive help may be provided.

     2.  a.  What entropic pressures or informational tensions
             determine a decision to introduce, modify, delete
             concepts, symbols, terms to/in/from the manifold
             of those already present in the system?