[edutex] updates

[Frank Quinn]

As Don reported, he and I had a very useful meeting last Thursday  
(2009/8/13). A number of changes will be made to incorporate this and  
other information.

1) Don pointed out that there are parts of PDF still under commercial  
control that might be important for us. As a result:

-- PDF is no longer the sole planned output format. We will also  
explore web formats.

-- EduTeX syntax should be noncommittal as to output format.

2) EduTeX, as a working group of TUG, should be a software project.  
The startup phase is part of a larger development involving  
educational theory and content. These considerations will shape early  
software work but  will quickly lead in directions not appropriate to  
EduTeX.

-- Educational background, and systematic development of content, will  
be temporarily located in "The EduMath Nursery" on the EduTeX wiki. It  
will move to a separate site when an appropriate host is found.  

-- This separation will enable the two aspects to evolve in their own  
ways after startup, though we anticipate continuing and stimulating  
collaboration. 

3) The proposed syntax and development plan will change in response to  
all this.

-- The modularity will be even more relentless

-- The immediate objective is implementation of "preview" mode. This  
will have little or no more functionality than can be achieved with  
standard LaTeX and hyperref. Form fields will be typeset simply as  
boxes. 

-- After "preview" is implemented, form functionality and conversion  
of preexisting content will proceed in parallel. This will enable  
these to influence each other. 

I'll update the wiki as soon as possible, but classes are about to  
start.

Frank