Is it possible to enable the "Flat Line Ends" setting via a script?
The are two primitives for this at the bottom of the sensing category, no need for the Getters & Setters library.
Fantastic ... Thank you so much!
Not seeing them on my computer
Aah - got it now 
I wanted to make a solid bar.
Thanks for the assist!
What does flat lines end even do?
Flat line ends makes the end of pen lines, well, flat. Normally they're rounded.