registerOperatorProcessor("Do", new Invoke());
registerOperatorProcessor("j", new SetLineJoinStyle());
registerOperatorProcessor("J", new SetLineCapStyle());
registerOperatorProcessor("K", new SetStrokingCMYKColor());
registerOperatorProcessor("k", new SetNonStrokingCMYKColor());
registerOperatorProcessor("rg", new SetNonStrokingRGBColor());
registerOperatorProcessor("RG", new SetStrokingRGBColor());
registerOperatorProcessor("SC", new SetStrokingColor());