| Interface | Description | 
|---|---|
| PackageNamespaces | 
 Open Packaging Convention namespaces URI. 
 | 
| PackageProperties | 
 Represents the core properties of an OPC package. 
 | 
| PackageRelationshipTypes | 
 Relationship types. 
 | 
| RelationshipSource | 
| Class | Description | 
|---|---|
| ContentTypes | 
 Open Packaging Convention content types (see Annex F : Standard Namespaces
 and Content Types). 
 | 
| OPCPackage | 
 Represents a container that can store multiple data objects. 
 | 
| PackagePart | 
 Provides a base class for parts stored in a Package. 
 | 
| PackagePartCollection | 
 A package part collection. 
 | 
| PackagePartName | 
 An immutable Open Packaging Convention compliant part name. 
 | 
| PackageRelationship | 
 A part relationship. 
 | 
| PackageRelationshipCollection | 
 Represents a collection of PackageRelationship elements that are owned by a
 given PackagePart or the Package. 
 | 
| PackagingURIHelper | 
 Helper for part and pack URI. 
 | 
| StreamHelper | |
| ZipPackage | 
 Physical zip package. 
 | 
| ZipPackagePart | 
 Zip implementation of a PackagePart. 
 | 
| Enum | Description | 
|---|---|
| CertificateEmbeddingOption | 
 Specifies the location where the X.509 certificate that is used in signing is stored. 
 | 
| PackageAccess | 
 Specifies package access. 
 | 
| TargetMode | 
 Specifies whether the target of a PackageRelationship is inside or outside a Package. 
 | 
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