To see the Object Properties dialog box for the unmasked area of your vignette, right-click Unmasked in the Object Explorer and choose Properties.
For vignettes created in earlier versions of Image Authoring, the Unmasked area is called the Background. These vignettes may display an Ident value. This is the object type for the Background you provided when you created the view.
The Object Properties dialog box for the unmasked area has these tabs:
Name: The name you provided for the unmasked area when you created the view. You can change this at any time.
Offset: The x,y values for the top left corner of the bounding rectangle of the unmasked area relative to the top left corner of the image. If you haven't defined a mask for this area, the values for the mask offset are the full width of the vignette.
Show: Creates a view of the mask for this object in a separate window. You can save this view at its actual size using the Save As command. This is a read-only view, so you can't edit it.
Export: Saves the mask image at the same size as the full image, filling in the area around the mask with black. You can export in .PNG format only.