When Arboreal encounters a potentially abstract URI, it uses the following lookup behavior:
Example 1: A user clicks on a link with the target 007/01/002.jpg. A catalog file has been loaded that maps this abstract URI onto
http://archimedes.fas.harvard.edu:8080/docuserver/digitallibrary/digilib.jsp?007-01-pageimg+2Arboreal opens a web browser window displaying the page image in Digilib.
Example 2: A user clicks on a link with the target 007/01/002.jpg. This URI is not mapped in the current catalog. Arboreal treats the URI as relative to the location from which the current document was loaded.