[PyMOL] Hight-quality visualisation

Dear PyMol users!

I wounder to know about all possible options of high-quality image's
visualisation by means of Ray command. Below you can see list of
commands which I've already tried

set ray_trace_mode, 3;
#set ray_trace_fog,0
#set ray_shadows,0
set antialias, 2
ray 800, 600

In particular I wounder to know how I could decrease width of contour
black line (appeared in set ray_trace_mode) ?
Also I'd like to show more examples besides those which I found here
http://www.pymolwiki.org/index.php/Ray_trace_mode#Modes


James