readonly attribute SVGAnimatedString in1; 

readonly attribute SVGAnimatedString in2; 

readonly attribute SVGAnimatedNumber k1; 

readonly attribute SVGAnimatedNumber k2; 

readonly attribute SVGAnimatedNumber k3; 

readonly attribute SVGAnimatedNumber k4; 

readonly attribute SVGAnimatedEnumeration operator; 

const unsigned short SVG_FECOMPOSITE_OPERATOR_ARITHMETIC = 6; 

const unsigned short SVG_FECOMPOSITE_OPERATOR_ATOP = 4; 

const unsigned short SVG_FECOMPOSITE_OPERATOR_IN = 2; 

const unsigned short SVG_FECOMPOSITE_OPERATOR_OUT = 3; 

const unsigned short SVG_FECOMPOSITE_OPERATOR_OVER = 1; 

const unsigned short SVG_FECOMPOSITE_OPERATOR_UNKNOWN = 0; 

const unsigned short SVG_FECOMPOSITE_OPERATOR_XOR = 5;