Abstract:
Access to first data is provided to a first user and to a second user. A specified change is received from the first user. Access to second data generated based on the first user's specified change is provided only to the first user. The first data is updated based on the specified change, in response to a selection by the first user of an option to apply the specified change to the first data. Simultaneous access to the updated first data is provided to the first user and to the second user.