The content displaying is an area where there are many future possibilities when it comes to increased interaction with content. They are discussed in Chapter 17, External Cooperation.
It is worth noting that we have only implemented support for Netscape Communicator as external content displayer. Adding further support is, however, trivial.
The URI given in the content description, and which is used to locate content, may be of any general form. When viewing a concept map as content, the displaying is handled by Conzilla itself, and thus the complete machinery of urn:path: resolving is used. Unfortunately, this is not used for other types of content. Instead, it is up to the web browser used to interpret the URI. This could cause problems in the future. See further Chapter 17, External Cooperation.