You can load an existing metamodel to use as a shell for your extension, or create a new metamodel. Loading an existing metamodel
               is probably a better choice, because it ensures against duplicating existing entity and relationship names. 
               	 
            
 
            	 
             
               		
               - To load an existing metamodel, choose 
                  		  Model > Open. An Open dialog is displayed, where you can browse for 
                  		  \Model\Repository\Common.Repstry.xml in the 
                  		  COBOL Analyzer installation directory. Click 
                  		  Open to load the metamodel. 
                  		
               
- To create a new metamodel, choose 
                  		  Model > New > Model. Nothing is displayed in the 
                  		  Architecture Modeler window until you add files, entities, or relationships.