The effect of adding ambient occlusion to the pen mode is nicer that the ‘Arctic with Outlines’ that is included with McNeels’ advanced display modes templates here: https://wiki.mcneel.com/rhino/6/advanceddisplay
The problem with adding outlines to Arctic (as opposed to adding AO to Pen) is that in Arctic, you can’t get a pen outline around, for instance, a sphere. Also, pen mode has a nice weighted modulation to line thickness.
Here, I’ve managed to upload it for anyone else: Pen with ambient occlusion.ini (11.5 KB)
“Go to the Tools menu > Options >View > Display Modes page and click Import . Navigate to the downloaded .ini files and import.”