doctype for generated pages

[Oliver Fischer <plexus@snafu.de>]

Hello,

I know that I can set chunker.output.doctype-system and 
chunker.output.doctype-public in my XSL layer to specify the values for 
the document prolog. But I think, that I can use these parameters only 
if I use chunk.xsl. How can I do the same for docbook.xsl?

Regards,

Oliver Fischer