Index-based hyperlinks have conceptual similarities with Dynamic Hypertext. This concept of dynamically adaptable structures is called virtual structures. There has less work however, on hypertext in the context of the World Wide Web. Currently, HTML uses a static explicit model for hyperlinks. Conclusion Index-based implicit hyperlinks provide a clean separation of hypertext mechanism and policy.
Indices are the mechanism underlying hypertext, providing a mapping from text phrase to attributes.
The browser implements the policy for using the attributes. This results in a powerful hypertext system in which indices can be accessed indirectly, merged into larger indices, and layered hierarchically. The result is a hypertext system in which documents have the full set of hyperlinks readers demand for convenient browsing, while reducing the author's burden of creating and managing links. The Guide System, Hypertext '87 Proceedings , November 1987. As We May Think, The Atlantic Monthly , July 1945.