To run Mainframe Subsystem applications in a TN3270 mainframe display: 
                  		
               
 
               		
                
                  		  
                  - Build your Mainframe Subsystem Application project. 
                     		  
                  
- Ensure that your project is associated with an enterprise server and that the server is running. 
                     		  
                  
- Launch the TN3270 Mainframe Display and connect it to the server. 
                     		  
                  
- Use the TN3270 Mainframe Display to execute the application.