Hello again…
Can we use all the world settings in real time (stars, gradient…) ?
“UVtextured-flipped-normals-big ball/cube” is the only way to
simulate the sky/starfield ?
Hi!
Short answers:
No.
Yes.
Thanks kEinStein !
Now I know ! 
Could not a python script be written that woudl save the setting of the game ? I am just learning python and NO where NEAR the level where I coudl write something like that but it would seem to me to be a simple script that woudl be call by a pyton controller.