When an image file is inserted to a graph/layout, and you set it as Linked File,
when you open the project, the image is automatically imported. Before, you will need to click a download button to bring back that image.
when you modify the image, it will auto update in graph/layout
@LFAU = 0,1,2 auto load image when gr object needed to be drawn. Default is 1: update all visible graphs/layouts. 2: update active window only. 0: no update
@LFC=0 to disable linked file check