3.3.5.9.1 Sending Slow-Path Graphics Update PDU
The structure and fields of the Slow-Path Graphics Update PDU are described in section 2.2.9.1.1.3, and the techniques described in section 3.3.5.1 demonstrate how to initialize the contents of the PDU.
The slowPathGraphicsUpdate field contains a single graphics update structure, which MUST be one of the following types:
Orders Update ([MS-RDPEGDI] section 2.2.2.2)
The contents of this PDU SHOULD be compressed by the server before any MAC signature is constructed and encryption methods applied if the size of the data payload exceeds 50 bytes. The Share Data Header MUST be initialized with the compression usage information (section 3.3.5.1).