Maximizing Viewer / Restoring Down
Maximizing
To maximize a viewer, do one of the following:
Double-click the image.
Use the 
maximize icon in the top-right corner of the viewer.
On the title bar of the viewer, click 
, and then select Maximize.
Press [Ctrl+M] or [Cmd+M].
Restoring Down
To restore the original size of the viewer, do one of the following:
Double-click the maximized image.
Use the 
restore down icon in the top-right corner of the maximized viewer.
On the title bar of the viewer, click , and then select Restore down.
Press [Esc] or [Ctrl+M] or [Cmd+M].