Show Source Image - This option will bring up the Source image setup dialogue.
Show Mosaic Statistic - This option will bring up the Statistic screen.
Fit to View - Use this option to fit your mosaic into the main program window.
Zoom In - Use this option to Zoom In mosaic i.e. enlarge preview.
Zoom Out - Use this option to Zoom Out mosaic i.e. decrease preview.
Actual Size - This option will shows mosaic tiles the size of thumbs stored in the library.