The document discusses the concept of hypertext, which allows non-sequential reading and linking of information. It describes Vannevar Bush's Memex system, which aimed to help researchers deal with the growing amount of information. Hypertext enables users to explore and access information in any document without a fixed sequential order. It can also incorporate other media like graphics. Some benefits of hypertext include ease of reference tracing, information structuring, and customized documents. However, orientation within the linked network can be challenging for users. The document outlines several uses of hypertext, including in education and language learning.