Thumbnails
Thumbnail is a miniature representation of a Autodesk Inventor part, assembly or a
      drawing. Autodesk Inventor integration generates the thumbnails in the JPEG or PNG
      format.
	 Thumbnails can be generated in the following ways:
- During the Save to PLM, thumbnails are created for editable files.
 - Using the Generate Thumbnails option on the PLM menu, users can create thumbnails for the non-editable files in the structure.