Hi Len,

re:
> Is there a way to know if a curve is almost a circle or almost an arc?

MoI tests every curve that is created and if it is almost a circle or arc then the crv.isCircle or crv.isArc properties will return true.

The tolerance value used for the "almost" part is 0.000001 , scaled up or down depending on the size of the curve's bounding box diagonal.


> Can I stuff a custom properties object into a curve object somewhere. Right now I am using
> user text, but it'd be easier if there was a way to handle custom properties objects.

User text is the mechanism to do this. Having custom properties objects would make things more complex when the properties need to be copied or saved/restored from a file.

Thanks,
- Michael