XLink sophisticated hyperlinking:
- Links that allow you to choose multiple destinations
- Bidirectional links
- Links with special behaviours:
- Expand-in-place / Replace / Create new window
- Link on load / Link on user action
- Link databases
- See <http://www.xml.com/pub/a/2000/09/xlink/>
XPointer
- Provides access to arbitrary portions of XML resource
- See <http://www.w3.org/TR/xptr/>