Translation Layer between OS/2 Graphics Engine and VMAN

The translation layer for the OS/2 Graphics Engine (GRE) is called 
GRE2VMAN. For a system that uses OS/2 as the dominant operating system 
service, GRE2VMAN is the first translation layer and the first component 
of the GRADD model to be loaded. When GRE2VMAN is loaded, it calls VMAN's 
VMIEntry function with a VMI_CMD_INIT.  When VMAN receives a VMI_CMD_INIT 
for the first time, it loads the other GRADD model components.