even though this is a very old question, the problem still exists: how to hyperlink an element from another element within the same diagram. especially, when dealing with huge diagrams, this would be a great benefit, as no connection lines have to be drawn between distant elements within the diagram. there is a hyperlink feature to connect elements with external documents, but it seems to lack something like a more detailed target specification when hyperlinking another yED document. e.g. "<file_link> # <element_id>" could do the job: after the jump, a feature would search for a specific element id and select it within the target diagram.
