type of zope vocabularies that dont "forget", like elephants

Introduction Like elephants don't forget anything, so does not collective.elephantvocabulary. It provides a wrapper around for existing zope.schema_ vocabularies and make them not forget anything.Example usecase would be a vocabulary (source) of users which from certain point in time wants to hide / deactivate some users for form or listing. But at the same time you want keep old references to...