For a listing by a hierarchy of subject, I think the index system does what you want and is the only approach that does what you want out of the box. But if I understand correctly, you already have an index, and want this to be a separate listing?
Yours, Christian Greg O'Keefe writes: > Hi, > > I keep a directory of notes as .org files, and use publish to generate > .html from them. This produces sitemap.html - a table of the #+TITLEs, and > theindex.html built from #+INDEX entries I have added. > > I would like a third summary .html page which lists the notes organised in > a tree by subject classification, where the subject classification is > something like the ACM Computing Subject Classification or the Dewey > Decimal system, or some cut-down version of these. > > The result would look a bit like this, where the _underlined_ items are > links to notes. > > Information Technology > Software and its Engineering > Modelling Languages > _Dynamic Logic for UML Sequence Diagrams_ > Computing Methodologies > Knowledge Representation > _Translating ACL to FOL_ > > Reading the manual, it looks like I could use TAGS to give the notes > subjects, and use these to do searches over the whole project in emacs. > This, and the way theindex.html is produced by including a simple looking > theindex.inc text file makes me think that the solution may not be very > hard. However, my lisp is very weak :-( > > Any suggestions or code most welcome! > > Cheers, > > Greg