1. global attributes provided by XLink Type definition attribute type Locator attributehref Semantic attributesrole, arcrole, title Behavior attributesshow, actuate Traversal attributeslabel, from, to

2. The XLink type attribute simple: a simple link extended: an extended, possibly multi- resource, link locator: a pointer to an external resource resource: an internal resource arc: a traversal rule between resources title: a descriptive title for another linking element

3. V-type element By convention, when an attribute includes the type attribute with a value V, we will refer to it as a V-type element, no matter what its actual name is. <bookref link:type="locator“ …

4. Table 1 - Attribute usage (from the W3C specification) Attributesimpleextendedlocatorarcresourcetitle typeRRRRRR hrefO R roleOOO O arcroleO O titleOOOOO showO O actuateO O label O O from O to O

5. Table 2 - Significant child types (from the W3C specification) Parent typeSignificant child element types simple- extendedlocator, arc, resource, title locatortitle arctitle resource- title-