Unless I’ve missed something, the content of link documents can no longer be accessed from within DT. In 1.7.3, I was able to create a link doc and then add text to the content area. This content area was searched and actually quite useful for associating notes with a bookmark.
The only way that I’ve found to read the content area of link docs is to drag and drop them onto TextEdit. This displays the content, but I haven’t found a way to update the content in DT.
Perhaps these notes should have been stored in the comment field, but the comment field isn’t as easy to access or format.
Personally, I like the web page display internal to DT, but I also liked adding text to link docs. Perhaps the need can be met if you make the comment field more convenient. A somewhat awkward alternative might be a View menu option to display either the linked html page or the document content.