[sldev] Wiki article on culling

[Mike Monkowski]

I've extracted some information regarding culling from the SLDev mailing 
list to create a page on the wiki.  Unfortunately, I don't know the code 
involved, so I don't know if it is still current.  Would anyone who 
knows, please have a look and correct anything I've got wrong and add 
anything you think might be useful.

http://wiki.secondlife.com/wiki/Culling

Thanks,
Mike