This enumeration specifies how to include a resource in a file.

Values:

IG_PDF_INCLUDE_ONCE_PER_DOC	Include the resource only once per file.
IG_PDF_INCLUDE_ON_EVERY_PAGE	Include the resource on every page in the file.
IG_PDF_INCLUDE_NEVER	Never include the resource.
IG_PDF_INCLUDE_WHEN_NEEDED	Include the resources only when needed.
IG_PDF_INCLUDE_BY_RANGE	Include the range of resource.