Hidden objects
                When objects are hidden from view, they are also  effectively hidden from the program; editing and most alignment functions do not  apply to hidden objects. 
                
                    - To hide objects, click Trace>Edit>Select objects, click the objects to select them, right-click and  select Hide Selected ... .
 
                    - To hide all sections other than the one being actively traced,  go to File>Preferences>Display  and check Show Current Section Only in the Serial Section Manager section. 
 
                
                 
                Objects must be restored—not just unhidden—before they can be operated upon within the Editing Mode. 
                Restoring hidden objects
                
                    - Click Trace>Edit>Select Objects.
 
                    - Right-click in the tracing window and select Reveal Hidden Objects.  Revealed objects appear in an olive green color. They are still  hidden from the program.  
 
                    - Select the revealed objects.  
 
                    - Right-click and select Restore Selected objects. 
 
                
                 
                Don't confuse the Trace>View>Show/Hide  function with hiding objects. Hide Tracing simply  turns off the tracing display, and does not actually create hidden objects.