Graphmath.Vec2.perp
You're seeing just the function
perp, go back to Graphmath.Vec2 module for more information.
Link to this function
perp(a)
Specs
perp(a) creates a vector perpendicular to another vector a.
a is the vec2 to be perpindicular to.
This returns a vec2 perpindicular to a, to the right of the original a.