Zoom
            in or out of the timeline to control the level of detail displayed.
         
         To zoom in horizontally:
         
         
            - Do one of the following:
               
                  - Drag the horizontal scroll bar up.
                  
 
                  - Hold down Alt+E and drag the magnifying
                     glass cursor to the left.
                  
 
               
             
         
         To zoom in vertically:
         
         
            - Do one of the following:
               
                  - Click the  
  zoom control.
                   
                  - Drag the vertical scroll bar to the left.
                  
 
               
             
         
         To zoom out horizontally:
         
         
            - Do one of the following:
               
                  - Drag the horizontal scroll bar down.
                  
 
                  - Hold down Alt+E and drag the magnifying
                     glass cursor to the right.
                  
 
               
             
         
         To zoom out vertically:
         
         
            - Do one of the following:
               
                  - Click the  
  zoom control.
                   
                  - Drag the vertical scroll bar to the right.
                  
 
               
             
         
         To zoom into a selected area:
         
         
            - Do one of the following:
               
            
 
         
         To return to the default timeline coordinates:
         
         
            - Do one of the following:
               
                  - To reset the entire timeline, click Home.
                  
 
                  - To reset only the horizontal scale of
                     the timeline, press Shift and
                     click Home.
                  
 
                  - To reset only the vertical scale of the
                     timeline, press Ctrl and click
                     Home.
                  
 
               
               TipTo return to the
                     previous settings, click Home a second time.