I just came across a broken web link in the docs, pertaining to BSP bounding
(I'm using v3.7.1 beta 9)
In the section 188.8.131.52 BSP Bounding, the link is in this sentence...
"For an explanation of what the values mean you may refer to Ray Tracing News
»article by Eric Haines."
I found Haines's current webpage at
.... then the link there to the archived 'Ray Tracing News' stuff at
But I don't know which of those many articles is the appropriate one.