Abstract: Using stored information about the content of an electronic document which an end user has accessed, and information about changes made by other users to the electronic document, when the end user accesses a server computer from any device, the server computer can identify changed content in the electronic document which the end user has not yet accessed. When the server computer delivers the electronic document to the device used by the end user, the electronic document can be accompanied by information indicating which content of the electronic document the end user has not yet accessed. An end user application on the device can present the electronic document with information indicating the content which that end user has not yet accessed. By storing this information on the server computer, the end user can access the electronic document from any device and quickly identify the changed content which that end user has not yet accessed.