DOCBOOK: relation website.dtd and docbook.dtd

Hello,

it seems so, that in the website DTD does not contain many 
elements that docbook contains.

Using for example simpara and interfacename in a document seems 
not to be ok, if I trust xmllint. On the otherhand, the xsl style 
sheets transform them in the right way.

My question is now how is the relationship between website and 
docbook? I thought always that website is based on docbook and 
extends it? How can I use elements like simpara, classname etc in 
a website document?

Bye

Oliver

-- 
Oliver Fischer - plexus[AT]snafu[DOT]de
[de] Das Internet stammt aus dem letzten Jahrtausend!