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Variant | 
  - 
A Picture object that indicates the node's picture ( A Picture object
implements IPicture interface ), 
 
  - A String expression that specifies the path to picture's file to be
    displayed
 
  - A String expression that indicates the base64
encoded string that holds a picture object. Use the eximages
tool to save your picture as base64 encoded format.
 
  - A String expression that specifies the key of HTMLPicture
    to be displayed.
 
 
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