The typical components for class support (as opposed to direct 
instruction or "courseware", and as opposed to analytic or production 
tools) are a focused broadcast mechanism (such as a mailing list), a 
restricted-access archive and discussion forum (a Discuss meeting or a 
controlled-access Web document connected to one), an index and 
repository for class materials (typically central locker space, 
interlinked Web documents, or sometimes fancier stuff), and a 
managed-queue, limited-respondent help system (such as our OLTA). 
Sometimes there's also an "who's out there"-type mutual help system 
(Zephyr, talk, and IRC are common vehicles) and a concealed-identity 
forum for suggestions or discussions (such as the one Hal uses in his 
Ethics subject.
An integrated scheme for doing all these typical things that was capable 
of including multimedia material (in the http or MIME sense) in all 
channels and forums would be a very interesting leap forward for us, 
very consistent with our traditional strengths and leadership and 
readily useful to others as well.