BSP and Visiability

Can someone tell me why Blitz supports Quake style BSPs but not the vis info in the BSP format? I really don't see the point unless you want to do very small rooms or you built a vis system yourself?

Has anyone written anything that will render a BSP using the vis info?

Thanks,
Ken

If you press the W key (wireframe) in the Blitz3D BSP demo you will see the vis in action, there would be indeed little point in implementing BSP without it.

Ahhh, the BSP demo works like a charm. I was using a maplet level. Doe!

Thanks!