Document links to To-Do's, Calls, and Notes

When you have a To-Do, Call or Note, you can drag and drop a document, which can then be accessed via the To-Do, Call or Note screen. However, when in the document screen you cannot see what To-Do, Call or Note it links to. This information should be made available somehow. It should definitely be present in the various document details screens (e.g. right-click on document and you can see file history and details). Perhaps should also be something that could be displayed on the document screen (e.g. maybe when you select a document line, it could be displayed near the bottom of that screen).