Re: HTML+

lamport@src.dec.com
Fri, 16 Sep 94 08:56:54 -0700


Message-Id: <9409161556.AA15473@lilac.pa.dec.com>
To: John C. Mallery <JCMa@WILSON.AI.MIT.EDU>
Cc: www-html@www0.cern.ch
Subject: Re: HTML+ 
In-Reply-To: Message of Fri, 16 Sep 1994 09:17-0400
    from John C. Mallery <JCMa@WILSON.AI.MIT.EDU>
Date: Fri, 16 Sep 94 08:56:54 -0700
From: lamport@src.dec.com


       No.  I'm saying that something can be ginned up to produce hypertext
       documents from dvi files (with appropriate \special's).  That would
       keep the TeX/LaTeX community happy until something better could be
       done.
   
   Latex2html already has such a feature.  see
   http://www.ELSEVIER.NL/WWW94/PrelimProcs.html

My understanding is that latex2html takes the opposite approach--it
tries to produce HTML, and resorts to using TeX to produce dvi files
when it can't figure out what to do.  In particular, latex2html cannot
embed active links in the middle of TeX-produced output--for example,
to allow you to make the limits of a definite integral be active
regions that can be clicked on to take you to other documents.

Here's a more realistic example of what I'd like to be able to do:
Create a formula, typeset by TeX, such that clicking on any symbol in
the formula causes a separate window to pop up with that symbol's
definition.  Note that this requires two new facilities: 

* the ability for TeX to tell the displayer to assign a link to
  a particular region of its output.

* the ability for TeX to tell the displayer to pop up a new window rather 
  than replacing the contents of the current window (rather than
  requiring the user to perform an awkward sequence of mouse clicks
  to tell the displayer to do it).

Leslie Lamport

P.S. I will be going out of town, so I'll be signing off after today
and will not participate in the discussion for a while.