Content-type: text/html; charset=UTF-8
ADD A<layer> [.<cname>] [@<sname>] [:W<width>] [:R<res>] <xy1> <xy2> [<xy3> ...] <EOC>
NOTE: Arcs with width are implemented by drawing a line with width along the path of the arc. This means that the finished arc has an effective outside radius <width>/2.0 larger than drawn.
The PD Piglet homepage is at http://www.omnisterra.com/walker/linux/piglet/intro.htm.