DOCBOOK: info on chunking needed

[Jakob <jakob@free.fr>]

Hi,

I just subscribed to this list.  I didn't find info on this in the archive, nor 
in the o'reilly docbook guide.

I would like to understand the chunking mechanism used by the dbk xsl style 
sheets.  

I need to create a similar mechanism for another dtd (which I am not allowed to 
convert to dbk), so I would be grateful for any pointers to urls or 
explications on how this works in general.  I am looking at the source, but it 
is admittedly rather complex.  What is the main entry point for the chunking 
templates?  Is there chunking support on several levels, and how does this work?

Thank you for your help in advance,
Jakob.