Drawing lines in Builder

Win 10
PsychoPy version v2022.1.3

creating lines seems straightforward in Code as the class has start and end parameters, however these are not present in the dialog box in Builder.

Presumably everything can be achieved using the other generic polygon parameters?

Has anyone worked out a logical and consistant way to do this?

I’m hoping that with the ‘correct’ setting for ‘Anchor’ that position, size and orientation can be used to create the line I want however initial testing is giving confusing output.
If anyone was cracked the logic, I’d be grateful if they could share their findings.
(NB setting the colour is fine)
Thanks, John