In this part all actions for loading a RFG-File is described.
The Model_Factory asks all registerd Specific_Model_Factories, if one can handle the file, which name is given. If one can, this one opens the file and creates a Node_Model, which represents the top layer of the graph.
A command is created, which tells the Dialog Factory to create the Viewmaster. The viewmaster asks the model for all nodes below the top layer; these nodes represents the views.