You can configure the options for running Mainframe Subsystem Applications using a TN3270 emulator in 
                  		Tools > Options > Micro Focus Tools, and on the 
                  		TN3270 Display page. 
                  	  
               
            
 
            	 
            
               TN3270 Display
 
               		 
               		
                
                  		   
                  			 
                  - Enable Display 
                     			 
                  
- Check this to run your Mainframe Subsystem applications in a TN3270 emulator. If you uncheck this, the IDE does not launch
                     or search for an emulator. 
                     				
                      
                        				   
                        					 
                        - Rumba (Embedded) 
                           					 
                        
- Enabled by default, if you have installed a version of 
                           						Micro Focus Rumba 
                           						9.5 or 
                              						  10. Starts the application in a Rumba Mainframe display embedded in Visual Studio. 
                           						
                            
                              						   
                              							 
                              - Connect automatically 
                                 							 
                              
- Check this to enable the Rumba Mainframe display to connect automatically to the enterprise server at debug time. 
                                 							 
                              
- Show warning dialog for PF keys context 
                                 							 
                              
-  Check this to view a warning dialog when you press a function key in the IDE when the integrated Rumba Mainframe display
                                 in focus. 
                                 							 
                              
- Notify of changing the enterprise server when debugging starts 
                                 							 
                              
- Check this to view a warning dialog when starting debugging while the TN3270 display is still connected to a different enterprise
                                 server. 
                                 							 
                              
 
- Rumba (Desktop) 
                           					 
                        
- Check this to run the applications in a mainframe session of the Rumba desktop outside of the IDE. This is the default setting
                           if you have installed a version of 
                           						Micro Focus Rumba earlier than 
                           						9.5. 
                           					 
                        
- External 
                           					 
                        
- Check to specify the path to an emulator that supports TN3270, other than Rumba.