Electronic book sharing server, electronic book sharing method, and electronic book sharing server program

摘要

The electronic book sharing server communicatively connected with an electronic book terminal determines the permitted operation of a user identifier to the additional information based on the permitted operation data previously determined for the user identifier upon receiving the additional information added to an predetermined electronic book content from the electronic book terminal 10, and stores a tag information associating the additional information with a page number of the electronic book content, the additional information being added to the page number to allow a user to view the electronic content from the electronic book terminal.