[Zope] ZClass Objectmanager question ...

[Darran Edmundson]

One more ObjectManager/ZClass question ...

When nesting ZClasses, the "SubObjects" tab of the
container class says to "Select the kinds of things 
that can be added to objects of this kind". However, 
the nested ZClass meta-type does not appear in this 
selection box.  Rather, one proceeds to the "Permissions"
tab and changes the class permissions to allow addition
of the nested class.  I don't understand this.  While
I know what to do (in recipe fashion), I don't understand
the rationale behind it.

Cheers,
Darran.