Actual Size - Use it to view the mosaic in an actual size.
Fit to Panel - This will fit mosaic image into main screen.
Zoom Out - Use this option to Zoom Out image i.e. decrease preview.
Zoom In - Use this option to Zoom In image i.e. enlarge preview.
Show Layer Inspector - This will shows a Layer Inspector
Redraw - This will redraw all layers with regard of current color correction,
blending and border
settings. Please note that you had to use this menu (or press "Redraw" button after any changes that
you make when you want to see the effect of this changes.