It's stated and used in the manual in many areas. In my level that has a sky block, I set an entity with the scene flag on and it doesn't work. If I set the scene flag like this:

my.scene = on;

I get a compiler error saying of an unknown parameter. Why is it doing this? Does this flag even exist? If it doesn't exist, then why is it stated often in the manual? If it does exist, why is it saying that it's an unknown parameter and why doesn't it work? The scene flag places the entity at the back end of the Z-buffer so that it's always drawn behind everything. I'm using 6.40.5 Commercial.

Download my sample project here (ZIP file - 418 KB) and add the "my.scene = on;" line after the first while loop of the only action near the bottom.