Whether to include all images in the analysis to allow the
detection of orphans.
By default the ImageOperation will go through the pages defined
in the PageContents looking at all
the images that are used. However it is possible to include an
image in a document yet never use it. This kind of orphan will not
be detected using this method.
To allow the detection of orphans this property can be used to
search the entire document and reference any image that exists.
Images that are not referenced on the page will appear in the
analysis as an ImageProperties item with
no ImageRenditions.
However be aware that referenced images may use an unreferenced
image as a mask or soft mask so just because an image is not
referenced does not necessarily mean it is unused. To detect
orphans you need to build a list of unreferenced images and then
remove from that any images which appear as the PixMap.Mask
or PixMap.SMask
of a referenced image.
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