An open IDML package: a zip file plus its designmap.xml manifest, parsed only as far as discovering the other parts it references — everything is still fully generic at this stage (GenericElement), since no specialist types exist yet.
The package parts referenced from designmap.xml, i.e. its direct idPkg:* children. Every such reference observed in practice is a childless element with only a src attribute (e.g. ``).
The package parts referenced from designmap.xml, i.e. its direct idPkg:* children. Every such reference observed in practice is a childless element with only a src attribute (e.g. ``).