Opengl support for coordinate systems

Does OpenGL support both World Coordinate system and Windows coordinate system. If so how can we select either of these two in our application.

Thanks,
Nirmal.

hi Nirmalj,
well i think the answer should be yes…
if you use the glut library, then there should be no problem of managing the Windows coordinate system and World Coordinate system…like using the glutWindowPosition(), glutWindowSize() etc…
erm…hope someone can correct me if I am wrong…