To add another program to the project: 
               	 
            
 
            	 
             
               		
               - Right-click the project in Solution Explorer. 
                  		
               
- Click 
                  		  Add > 
                  		  New Item. 
                  		
               
- Click 
                  		  PL/I Program in the left pane. 
                  		
               
- Change the name to 
                  		  sub.pli and click 
                  		  Add. 
                  		  
                  This adds the new file to the project, and opens it in the editor. 
                     		  
                   
- Add the following line to the code: 
                  		  put skip list ('Hello world sub1' );