Extended Links
You may be used to the idea of simple links much as they work in HTML and as I've discussed them here, but here's where we broaden things by getting into extended links. Extended links are very general and really indicate relationships between resources. An extended link can involve multiple resources, multiple paths between those resources, bidirectional paths, and “out-of-line” links. It helps to think very generally here, in terms of all the possible relationships you might have between data resources.
The upcoming concepts may seem very vague when compared to the concrete functionality of simple links. Keep in mind that the W3C is trying to let you describe, in XML terms, all the possible relationships that might exist among ...
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