Use this menu command to cause the equality of the client and drawing areas. This menu item is disabled if there is already this equality. If you have checked the Dynamically Resize item in the Options menu, then this equality is kept automatically whenever the size of the client area changes. Please note that by default this automatic resizing applies only on a drawing, which is not zoomed and this can be changed in the Zoom section of the Preferences dialog.
For more information see the SPLOT Working Principles topic.