Comprehensive guide to shape scripts

[crode]

Is there a comprehensive guide to shape scripting?
I am newbie in that area and currently struggling with the notion of paths and with apparent differences between the arc and arcto drawing command.
Of course I have looked at all help material available in EA, but that does not help.

[Eve]

There isn't anything further than what's in the help.

ArcTo is an arc but a line is drawn to the start point which keeps a path as a continuous line.

[edbridge]

I would agree that the shapescript capability would be a prime area for more complete documentation. Days of trial and error brought insight, though I'm still not very comfortable with it. Perhaps some enterprising soul would take this on?