Document flow

I listed one of the purposes of a document is to communicate information. Therefore, implicit in that is the concept of document flow. It could be as simple as an author writing a document with no input from others, and then sending the document to other people for them to be able to read (e.g. writing / distributing a resume). It could be as complex as a document that is edited by one person who collects information from multiple people, all of whom review each revision, after which a vote is taken to approve the document (e.g. an ISO standard). In either case, the explicit notion that a document is used to communicate information implicitly means that 2 or more people in different capacities will make use of the document, and there will be some relationship in how the document flows between them.

Question: Is it possible to list the common roles that people have in relation to documents?

How should a person (in the context of the previous paragraph) be defined? One possible use case for a document is for a person to record information that he doesn't necessarily intend to share with others, but will use himself at a later time (e.g. a diary). In this case, one way to look at it is that the person is communicating information to himself at a later time (i.e. it's an extension of his memory). In one sense, there really are 2 users of the document in this case: person A at time 1 and person A at time 2. I think it's appropriate to define a specific term to capture this concept; for lack of imagination, I'll call it User (capitalized).