To build the html and manual pages from the SGML sources, you need the 
following tools:

- The DocBook DTD
  (http://www.davenport.com)
- James Clark's SGML tools (jade, sx suffice)
  (http://www.jclark.com)
- Normal Walsh's DSSSL stylesheets to make the HTML pages
  (http://nwalsh.com/docbook/dsssl)
- My db2man tool to make the manual pages
  (http://www.ocaml-programming.de/packages)

The latter also requires Christian Lindig's XML parser
(//http://www.cs.tu-bs.de/softech/people/lindig/software/tony.html).