In an extended link with three resources, A, B, and C; there are nine different possible traversals.
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:label
attributes of the locator
element in the extended link from which traversal is initiated and to which the
traversal goes.