The browser reads documents, and can fetch documents from other sources. Information providers set up hypermedia servers which browsers can get documents from. On top of these, if the server has search capabilities, the browsers will permit searches of documents and databases. The documents that the browsers display are hypertext documents. Hypertext is text with pointers to other text.
Hypermedia is a superset of hypertext - it is any medium with pointers to other media.
This means that browsers might not display a text file, but might display images or sound or animation. This marks the fifth edition of Port 2000. Back issues are available on request.