(This function is only available with the preview display).
The height (with the bar at top/bottom) or the width (at left/right) can also be altered interactively. Run the mouse cursor to the edge next to the layout area to turn it into a shape of two opposed arrows, then drag the boundary to the desired size while holding down the mouse button.
Incidentally: Navigator will remember different values for horizontal and vertical positions.
With the +/- keys at left or top respectively you can browse through various cached displays for the current page if several were calculated for different bar widths or percentage values.
