Hypertext is a compositional tool as well as a conceptual approach to communication. As a compositional tool, hypertext markup languages allow the author of a hypertext to establish links among the parts of a document, or between any number of complete documents, for ease of reference or for amplification of an idea. Since the reader of a hypertext can choose to follow these links or not (and in some contexts, such as a Web site, establish new links), hypertext tools also permit the reader to become an "author" as well. The "final" hypertext document, therefore, may take any number of forms, depending upon the needs of the audience.
Hypertext technical documents are very useful for training and for communicating instructions and procedures.