DOCBOOK-APPS: lang attribute in websites

Hi,

 

I'm using the 
website.dtd and stylesheets for some time now. The one thing I haven't been able 
to figure out is: Where can I put the lang attribute. All my websites are in 
German and I'd like to have gentext stuff in German.

 

Apparently, there is 
no stylesheet parameter "language" and starting a page with <webpage 
lang="de"> does not validate.

 

Any 
ideas?

 

 

Thanks

 

Peter