KAM 9/95 -- quiz stats should report # of questions remaining on frame

DMC 8/95 -- navigation frames should be flagged as such and Prev/Next hidden

JWS 7/95 -- wants a hot indented-hierarchy table of contents

DMC 4/9/95 -- implement "Next Question" button

via JWS 3/6/95:
   - trigger the "show answer" button after N tries, where N=3 for JWS
   - implement Pin quiz (show outline and/or centrally-located pin icon)
          (have author specify lists of alternatives for multiple choice]

ghosts from the distant past:
- given a structure name, find a list of frames that contain it
- Naming quiz (complete with spell checker, "be more specific", etc.)
- Intelligent quiz (server decides questions and controls interaction)
- work towards StudyGuide behavior (guided tutorials)

- let the user interrupt a movie file transfer -- check for command-period
  occasionally and extend the protocol to let the client tell the server to
  stop sending the rest of the data.