Creating Views > Editing Appearance > To Expand or Collapse 3D Thumbnails
  
To Expand or Collapse 3D Thumbnails
To expand or collapse 3D thumbnails, use these commands:
Action
Result
In the model tree, select the root or the required thumbnail, and then click Home > Thumbnail > Expand 3D Thumbnail or Home > Thumbnail > Expand 3D Thumbnail to Full Detail. Alternatively, in the graphics area, select the required assembly or part, right-click and choose Expand 3D Thumbnail to Next Level or Expand 3D Thumbnail to Full Detail.
The required assembly is loaded. The thumbnail icon changes to unloaded.
In the model tree, select the root or the required assembly or part, and then click Home > Thumbnail > Collapse 3D Thumbnail. Alternatively, in the graphics area, select the required assembly or part, right-click and choose Collapse to 3D Thumbnail.
The required assembly is unloaded. The thumbnail icon changes to loaded.