flash_type: flash_arc
The flash_arcs are really just converted to a series of line segments to be drawn as a line since in Flash they are defined in terms of a delta x and delta y value pair for the distances from the starting point to the control point and a control x and control y value pair for the distance from the control point to the end point. This does not match the FME definition of an arc, thus to avoid gruesome math, the arc is stroked into a series of line segments and drawn as a line.