references

Hi all,

I'm trying to use the referencing mechanisms available in Archetypes.
I can't find any documentation out here, and I can't figure from the
source if I'm doing something wrong, or if I'm just misunderstanding
what references are/how they work.

Basically, I want to 'link' a copy of an object to it's original. I 
do something like (zope pseudo code):

copy = orig.clone() 
orig.addReference(copy)

This does give me a 'referenced by' entry in the references tab, pointing
to 'orig'. However, I don't see a 'referencing' entry in orig's references
tab - why not?

Also, what's the 'relationship' argument to addReference? Just a string,
identifying some used defined relation, or are there pre-defined relations
somewhere?

Cheers

        Ivo

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