2.6.2 Vendor-Extensible Fields
Group Policy protocols can incorporate new functionality by adding new extensions to the Group Policy client or the Administrative tool. Each new extension can also potentially be extended. For more information about implementing extensions on the Group Policy client, see [MS-GPOL] section 1.8. Extending the Administrative tool requires the use of the ADM specified in [MS-GPOL] section 3.3.1.
The system vendor-extensible fields of each extension protocol are documented in the respective extension protocol specification. These are specified in section 1.8 Vendor-Extensible Fields of the respective technical documents.