Thank you Michael. This and the option of round line caps plus the high resolution screenshot to clipboard would allow some nice shaded NPR renderings.
Alternatively if hidden lines are not exported to Illustrator I could change the line caps there.

Hi Martin, something like rounded end caps may happen eventually in a sort of offline render method where it would calculate an image but which may take a while longer to generate than the regular real-time viewport display. It's a big focus for the regular display to do its job quickly and that tends to put some limits on what I can handle there.

But most likely I will be trying to focus on generating a hidden-line output to Illustrator first before stuff like that happens directly in MoI.

- Michael

we can also change the parameters moi.view.lineWidth = 1; & moi.view.lineWidth = 4;from the srcript