Hello Tom
It gets it's settings from the Image/3D Projection settings. Also look at "more sun" in this dialog box.
My favorite settings for a sketch rendering are:
Skyliner and then Pen and Ink.
I make a couple of tweaks:
Darkeren the Pen color, Make the lines less squiggley, and less overshoot.
These can be save into a text file if you take the time to search for a txt file in the addons/rendering/sketch...(didn't confirm this path)
What I like about these setting is that it looks like a good sketch and it is FAST. A big reason why it's fast, is that Shadows and Hatching are turned off. That stuff takes too long for my taste.
David Pacifico, RA
AC27 iMac i9, 32 gig Ram, 8 gig video Ram