First, conventional anchors within HTML documents that include URLs pointing to GraphDomain object. The second type will be hyperlinks external to HTML content, similar to DGS's notion of hyperlink. These hyperlinks will be included within HyperGraphs. This will also be true with respect to a Region, since we take the position that Regions support the same semantics as Domains. But it may require the forwarding of requests from one Domain to another and, possibly, for OIDs to be unique within Regions, not just Domains.
Several options are possible for deletions.
An open set of issues exists with respect to notification. Operations affected by HyperLinking Requirements Many of the implications of hyperlinking are uncovered by considering the semantics of several common operations. We discuss several such relevant operations here. A HyperGraph consists of a set of HyperLinks and HyperNodes. HyperNodes will often be created by coping a Structural Node from a StructuralGraph to a HyperGraph.