The dsssl stylesheets in this directory are for use with the GNOME Documentation Project. gdp-both.dsl is designed to be a drop-in replacement for cygnus-both.dsl which is the default stylesheet for DocBook Tools - http://sourceware.cygnus.com/docbook-tools/. To use the stylesheet you may either copy over cygnus-both.dsl replacing the file - or change your db2* scripts to point to gdp-both.dsl. Alternately - if you are running the latest version of DocBook Tools you may use the -d option to point to the stylesheet... $db2html -d /path/to/gdp-both.dsl