If this option is active, then you must provide thumbnails for index pages.
 These thumbs should differ from full size pictures by a unique ID and be saved
 in a subdirectory within the directory which holds the gallery files.
  If this option is inactive, then the full size pictures are scaled down and
 used as thumbnails on index pages.
 
  NOTE: This program does not create any thumbnails for you, todays there are
 already enough 3rd party programs to do this job. However, an ARexx-Script is
 created to control the PPT graphic tool (see Thumbnails via PPT) if this
 option is deactivated. You can then decide to use the gallery as is with the
 down-scaled full size pictures, or you maybe use the script to create real
 thumbnails, then you can later activate this option and create the gallery
 again using the generated thumbnails.
 
  NOTE ALSO: The thumbs size shoudn't exceed 170x110 pixels, bigger ones are
 possible, but would expand the layout to more than 800 pixels. Because most
 people use a 800x600 resolution you should avoid this.
  The generated ARexx-Script is taking care of this rule automaticly.