The Zoom toolbar provides tools to modify the enlargement factor of the current active worksheet. An enlargement factor is kept for each individual open worksheet.

Screen shot: Zoom toolbar.

First section of the toolbar:

• The first button increases the zoom factor by 25%. The zoom factor is limited to a maximum enlargement of 400%. If this limit is reached, the button has no effect.
   
•   The second button reduces the zoom factor by 25%. The zoom factor is limited to a minimum reduction of 50%. Once this limit is reached, the button has no effect.

Second Section of the toolbar:

• The five buttons set the enlargement factor at 50%, 75%, 100%, 200%, and 400%.