These are run by companies and individuals who choose to be service providers using the shared method. All the contents on all of the Xanadu storage servers act as a single pool. You can send for any part of any document or link to or quote any part of any document. A request is received by the user's session node which fans it out to wherever the material is. The user's payment is correspondingly sent to those publishers involved with the transaction.
Freedom People are free to read anything.
All hypertext jumps are reversible. Under other systems the reader is often tunnelled into reading in only one direction on any given document. We believe the reader must always be free to go back, turn the page, fast-forward or access the original document of a quote. People will be free to jump into a document at any place and use it according to their own preferences. The computer screen makes new forms of writing possible that are not sequential.