void convertToSpecifiedUnits(
    in unsigned short unitType); 

void newValueSpecifiedUnits(
    in unsigned short unitType, 
    in float valueInSpecifiedUnits); 

const unsigned short SVG_LENGTHTYPE_CM = 6; 

const unsigned short SVG_LENGTHTYPE_EMS = 3; 

const unsigned short SVG_LENGTHTYPE_EXS = 4; 

const unsigned short SVG_LENGTHTYPE_IN = 8; 

const unsigned short SVG_LENGTHTYPE_MM = 7; 

const unsigned short SVG_LENGTHTYPE_NUMBER = 1; 

const unsigned short SVG_LENGTHTYPE_PC = 10; 

const unsigned short SVG_LENGTHTYPE_PERCENTAGE = 2; 

const unsigned short SVG_LENGTHTYPE_PT = 9; 

const unsigned short SVG_LENGTHTYPE_PX = 5; 

const unsigned short SVG_LENGTHTYPE_UNKNOWN = 0; 

readonly attribute unsigned short unitType; 

attribute float value; 

attribute DOMString valueAsString; 

attribute float valueInSpecifiedUnits;