gendaylit(1) on Linux
The text c4956d6205ff, as Debian 7 (Wheezy), Debian 6.0 (Squeeze) shipped it. The page shows this text now.
generates a RADIANCE description of the daylit sources using Perez models for diffuse and direct components
Flags it lists
-
-L -
-O -
-P -
-W -
-s