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strongRelatedTo

* The Document is related to a Document
 # The document may be implicitly weakRelatedTo also
  - Would we need virtual Descriptors for topics (transitive 
    hulls) to have a good targetdocument for telling relation
    to a topic?
 # links have different relevance due to the effect they
   have on the transitive hull of their containing topic.

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weakRelatedTo

* The Document is related to the network of documents
  containing the targetdocument
 # The Document should not be implicitly 
   strongRelatedTo the target
 # If misplaced, the topic may collapse in a misformed topic
 # Every link is equal in its importance
  - Does this mean, that strongRelatedTo is maybe just some
    kind of frontend to prevent/correct errors ???


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