|   There are two different types of lists in the service structure: 
standard-list:simple list with title and metadata (
  example) thumbnail-list:
 list with image preview for facts of the services "image" and "slideshow" (
  example)
 If you want to allow users to choose between standard and thumbnail list, you need to enable this option. By doing so, users are provided with a drop-down menu as soon as they create a folder.   In order to enable the thumbnail list option, proceed as follows:
 |1| Choose "Interface from the main menu.
 |2| Click on the "modify"-button in the row "Define list columns".
 
 |3| Click on the "list"-button in the row "Structure".
 |4| Click in the checkbox in the row "Thumbnail list".
     
     |5| Finally, click on "Save changes". 
 
 
 
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