OptionalthroughA point the arc passes through between its ends, in the sketch's x and y.
OptionaltoWhere the arc ends, in the sketch's x and y.
OptionalrelativeWhen true, through and to are offsets from where the pen is rather than points of the sketch.
OptionalidA name for the command, reported with the edges it draws; leave it out to be named by position.
A point to pass through and a point to end at, for
sketch.commands.threePointArc, which makes the circular arc commandsketch.pendraws from where the pen is.