El | Element (PDF+ Element) | A PDF+ Shape, Block, DataSet, Text Fragment Element, or Geometry.
F | Fill Color (Colour) | Optional fill color for the shape.
S | Stroke Color (Colour) | Optional stroke color for the shape.
W | Stroke Weight (double) | Optional stroke weight for the shape.
P | Pattern (double "list") | A comma-separated pattern. ex (1.5,2,1.0)