Hi Dieter and others,
 
first of all: thanks for your great product: i admit - it looks like the perfect choice to me. I installed it on Zope 2.3.2 and get the following behaviour:
 
My structure:
root
|- german (has its standard_html_header)
|   `- research
`- english (has its standard_html_header
    `- research
        `- ProjectOne (folder with index_html: <dtml-var standard_html_header>Welcome.<dtml-var standard_html_footer>)
 
I installed a MFolder as "root" (see above) with a set to "english".
 
When I type in the following URL into the browser:
   http://server/root/german/research/ProjectOne
I get the english standard_html_header along with ProjectOne's index_html.
 
Is there a way to modify your great product so that ProjectOne's index_html <dtml-var standard_html_header/footer> get the german's standard_html_header/footer?
 
 
Thanks in advance for your help,
Philipp Robbel