Link: Explicit relationship between two or more resources.
Linking element: An XML element that asserts the existence and describes the characteristics of a link.
Locator: An identification of a remote resource that is participating in the link.
- one linking element defines a set of traversable arcs between some resources.
A local resource comes from the linking element's own content.
Out-of-line link: link with no local resource.
Inline link: link with local resource.