The Fit 
option allows toggling between two commands. The first command resizes the Screen to fit in the visible area and the second command restores the previous zoom level and scroll bar position.
NOTE |
This toggling is lost in the following cases: •When moving a Screen's scroll bar •When changing a Screen's zoom mode •When changing a Screen's alignment mode at run time •When changing a Screen's useful visible area |
To keep the fitting of a Screen to the visible area, use the Full Screen option on the Zoom menu.