1.3.1.2 Drawing Orders
Drawing orders are used to perform the following operations:
Transport bitmap data
Encode graphics rendering primitives
Manipulate data caches
Manage rendering surfaces
Support application remoting ([MS-RDPERP] section 1.3)
Support desktop composition ([MS-RDPEDC] section 1.3)
There are three classes of drawing orders:
Primary
Secondary
Alternate secondary
These three classes of drawing orders are described in sections 1.3.1.2.1 through to 1.3.1.2.3.