IOverlay actions
Use the IOverlay actions to combine the current page image with a background image. You can use this action to reapply a form background that dropped out during scanning.
This action will be removed in a future release. It is recommended that this action is no longer used. Instead, use the replacement action OverlayCurrentImageOnBackgroundImage in the ImageUtilties action library.
The IOverlay actions enable dithering of a background image and haloing with white pixels around the black pixels on an image. These actions make the image easier to read.