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dotCooCoo
9d9b69a544
The importer kept a group's isolation only when something inside it blended, so an isolated group or knockout group whose objects only overprint read back without isolation. Written out again, it lost its /I true and its overprinting objects then kept the inks of the art below the group that they had covered. Isolation is now also kept when a visible fill or stroke inside, or characters' fill or stroke, overprints, directly or through children that do not isolate.