Creates a virtual colormap and copies the contents of the system colormap to it.
call "CBL_SCR_CREATE_VC" returning status-code
None
The run-time system can only have one virtual colormap, and it is used in preference to the system colormap as long as it exists.
Comments:
The run-time system can only have one virtual colormap, and it is used in preference to the system colormap as long as it exists.