Area is a strategy to protect the safety of system operation, in DIAView configuration software development environment, by setting the safety operation of the graphics object access partition protection. Safety zone generally used together with the user, a user can have one or more safety operation privileges, a graphics object can belong to one or more safety; In the process of system operation, users can only access operation in graphics object, he have to avoid users misoperation, unauthorized operation, ensure the safety of system operation and operation.