Placing
            the mouse cursor over the View Layout sub-menu displays selections
            you can use to store up to four zoom and pan settings. This is useful
            when you want to jump back and forth between different points on
            an animation curveāsee 
                     View Layouts.
         
         To set a zoom and pan view:
         
         
            - Zoom and pan to the area of the animation
               curve you want to set as a view layout.
            
- Right click in the Animation Editor view
               and select one of the four Set options from the View Layout sub-menu
               or press Ctrl + F(1,2,3,4).
            
- Repeat steps 1 and 2 to add more layout
               views (maximum 4).
            
- Press F
                  (1,2,3,4) to activate the view or select Activate from
               the View Layout sub-menu.
            
- Press Shift + Ctrl + F
                  (1,2,3,4)  to delete the layout view or select Delete
               from the View Layout sub-menu.