[TYPO3-english] Multi-language / country related question

[David Vandemaele]

Hello,

I have a customer who wants an international site in +20 languages.
He also wants to have the possibility to use subdomains (for example: 
poland.example.com, belgium.example.com). These subdomains will contain 
65% of the content of international site, but then translated, and 35% 
that can be different from country to country (or in this case, from 
subdomain to subdomain). In the future, those 35% can increase. If 
content on the international sites changes, those changes need to be 
reflected on the subdomains as well.

Example:
---------------------------------------------------------------------------
[International site www.example.com, translated in +20 languages]
- Index
- Item1 (subpages 1.1, 1.2, 1.3)
- Item2 (subpages 2.1, 2.2)
- Item3

[Belgium belgium.example.com, referenced content is the same as the 
translated content on the international site]
- Index (Reference to page content of 'Index' on international site, but 
translated)
- Item1 (Page content should be a copy/reference of the page content of 
Item1 on the international site)
- Item2 (Only the content of subpage 2.2 is referenced, the other page 
has different content)
- Item3 (Reference/copy of the content of Item3 on the international site)

[And so on for +30 countries]...

It looks like I need an overlay mechanism for a subdomain so it could 
contain shared content (references to the international site) and own 
national content.

Can anybody point me to the right direction?
I think I'll need a tree for each subdomain and a tree for the 
international site. But how can I avoid manually creating a reference 
for each common content element?

Maybe there are other solutions for this kind of problem?

Best regards,
David V.