The specification of the Ted Nelson links is described at Project Xandu (archival copy,) 

The Ted Nelson links are ordinary auto-generated web links that point to a collection of documents that are somehow related to the visual object (text, image, etc.) that has been automatically converted to be a link. Some of those objects might be labeled by the author as the source of the visual object that links to the collection of documents and that the author uses as a citation.

Ted Nelson Related References

• http://ascii.textfiles.com/archives/5206 (archival copy)
  
• http://hyperland.com/Tedpage-D291.html (archival copy)
  
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