umbraco: 4.5.2 asp.netv 3.5 windows2008, iis7

Is there anyway set configuration options for htmlTidy... all I can seem to find is htmlTidy enabled or disabled in the config/umbracosettings.config file.

<TidyEditorContent>False</TidyEditorContent>

I would like to be able to set merge-divs to false and xml-output to true.

http://tidy.sourceforge.net/docs/quickref.html#merge-divs

http://tidy.sourceforge.net/docs/quickref.html#output-xml

thanks.