readonly attribute SVGAnimatedString in1; 

readonly attribute SVGAnimatedString in2; 

readonly attribute SVGAnimatedEnumeration mode; 

const unsigned short SVG_FEBLEND_MODE_DARKEN = 4; 

const unsigned short SVG_FEBLEND_MODE_LIGHTEN = 5; 

const unsigned short SVG_FEBLEND_MODE_MULTIPLY = 2; 

const unsigned short SVG_FEBLEND_MODE_NORMAL = 1; 

const unsigned short SVG_FEBLEND_MODE_SCREEN = 3; 

const unsigned short SVG_FEBLEND_MODE_UNKNOWN = 0;