Handling document revision history information in the presence of a multi-user permissions model

A non-transitory computer-readable storage medium storing instructions that when executed by a computer cause the computer to perform a method for controlling accesses to revisions of documents in the presence of a multi-user permissions and ownership model, the method comprising:

• receiving, on behalf of a user, a request to access a previous revision of a document that was made prior to a most-recent revision;
• granting access to the previous revision only if the user was the owner of the document at the time that the previous revision was made;
• and
• directing the user to the most-recent revision if the user was not the owner of the document at the time that the previous revision was made and if the user has read permissions for the document, wherein the user's permission control associated with the previous revision of the document is not available.

An apparatus that controls accesses to revisions of documents in the presence of a multi-user permissions and ownership model, comprising:

• a receiving mechanism configured to electronically receive, on behalf of a user, a request to access a previous revision of a document that was made prior to a most-recent revision;
• and
• an access mechanism configured to control access to the revisions of documents, wherein the access mechanism is configured to:
• electronically grant access to the previous revision only if the user was the owner of the document at the time that the previous revision was made;
• and
• direct the user to the most-recent revision if the user was not the owner of the document at the time that the previous revision was made and if the user has read permissions for the document, wherein the user's permission control associated with the previous revision of the document is not available.