Arcs

• In an extended link with three resources, A, B, and C; there are nine different possible traversals.

  • A --> A
  • B --> B
  • C --> C
  • A --> B
  • B --> A
  • A --> C
  • C --> A
  • B --> C
  • C --> B

• These potential traversals are called arcs

• Arcs are represented in XML by elements that have an xlink:type attribute with the value arc.

• Traversal rules are defined by attaching xlink:actuate and xlink:show attributes to arc elements.

• An arc element has an xlink:from attribute and an xlink:to attribute.

• These attributes match the xlink:role attributes of the locator element in the extended link from which traversal is initiated and to which the traversal goes.