[Zope] Export format documentation

[Sébastien VINOT]

Hello,

I have an export file of objects (that come from a Plone 2.0.5
instance). Unfortunately, the products are not compatible with a newer
Plone version. I'm building a new version of this product (but it will
be quite different from the initial one).

I'm wondering if it is possible to load datas for a zexp file without
the old product and then build new instances of my new product. That is
why I'd like to know if there is a good documentation concerning the
internal structure of zexp files.

Thanks in advance

Sebastien