||Creates Packaging API objects and provides support for saving and loading packages.
||Represents a package and provides methods to access the package's parts and relationships.
||Represents a part that contains data and is not a Relationships part.
||A read-only enumerator of IOpcPart interface pointers.
||An unordered set of IOpcPart interface pointers to part objects that represent the parts in a package that are not Relationships parts.
||Represents the part name of a part.
||Represents a relationship, which is a link between a source, which is a part or the package, and a target.
||A read-only enumerator of IOpcRelationship interface pointers.
||Represents a Relationships part as an unordered set of IOpcRelationship interface pointers to relationship objects.
||Represents the URI of the package root or of a part that is relative to the package root.