Hi Dieter,

thanks a lot for your reply. I found how they did the registration for fixed
directories in the __init__.py's, but how to do it for directories that will
be arbitrary? How would one remember them and read them in the _init__.py of
a product. But for the extensions is it either "registerFileExtension" or
"registerMetaType", not both? I thought you would have to register a list of
extensions for every new metatype? And to make them persistent they have to
be registered the same way on every serverstart I guess?

By the way wouldn't it have been much better and not so much more work to
have implemented a general purpous persistent DirectoryView than just a
limited one for CMF? I think to keep the data.fs slim and for other
applications it is a very useful enhancement of Zope (and improvement over
localFS). As a newbie in generating products I don't want to start with such
a project.

-- many thanks for your replies again, Elena


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