IDL Definitions

This appendix is normative.
This appendix contains the complete Web IDL for the SVG Document Object Model definitions.
[Exposed=Window]
interface SVGElement : Element {

  [SameObject] readonly attribute SVGAnimatedString className;

  readonly attribute SVGSVGElement? ownerSVGElement;
  readonly attribute SVGElement? viewportElement;
};

SVGElement includes GlobalEventHandlers;
SVGElement includes HTMLOrSVGOrMathMLElement;
dictionary SVGBoundingBoxOptions {
  boolean fill = true;
  boolean stroke = false;
  boolean markers = false;
  boolean clipped = false;
};

[Exposed=Window]
interface SVGGraphicsElement : SVGElement {
  [SameObject] readonly attribute SVGAnimatedTransformList transform;

  SVGRect getBBox(optional SVGBoundingBoxOptions options = {});
  SVGMatrix? getCTM();
  SVGMatrix? getScreenCTM();
};

SVGGraphicsElement includes SVGTests;
[Exposed=Window]
interface SVGGeometryElement : SVGGraphicsElement {
  [SameObject] readonly attribute SVGAnimatedNumber pathLength;

  boolean isPointInFill(optional DOMPointInit point = {});
  boolean isPointInStroke(optional DOMPointInit point = {});
  float getTotalLength();
  SVGPoint getPointAtLength(float distance);
};
[Exposed=Window]
interface SVGNumber {
  attribute float value;
};
[Exposed=Window]
interface SVGLength {

  // Length Unit Types
  const unsigned short SVG_LENGTHTYPE_UNKNOWN = 0;
  const unsigned short SVG_LENGTHTYPE_NUMBER = 1;
  const unsigned short SVG_LENGTHTYPE_PERCENTAGE = 2;
  const unsigned short SVG_LENGTHTYPE_EMS = 3;
  const unsigned short SVG_LENGTHTYPE_EXS = 4;
  const unsigned short SVG_LENGTHTYPE_PX = 5;
  const unsigned short SVG_LENGTHTYPE_CM = 6;
  const unsigned short SVG_LENGTHTYPE_MM = 7;
  const unsigned short SVG_LENGTHTYPE_IN = 8;
  const unsigned short SVG_LENGTHTYPE_PT = 9;
  const unsigned short SVG_LENGTHTYPE_PC = 10;

  readonly attribute unsigned short unitType;
           attribute float value;
           attribute float valueInSpecifiedUnits;
           attribute DOMString valueAsString;

  undefined newValueSpecifiedUnits(unsigned short unitType, float valueInSpecifiedUnits);
  undefined convertToSpecifiedUnits(unsigned short unitType);
};
[Exposed=Window]
interface SVGAngle {

  // Angle Unit Types
  const unsigned short SVG_ANGLETYPE_UNKNOWN = 0;
  const unsigned short SVG_ANGLETYPE_UNSPECIFIED = 1;
  const unsigned short SVG_ANGLETYPE_DEG = 2;
  const unsigned short SVG_ANGLETYPE_RAD = 3;
  const unsigned short SVG_ANGLETYPE_GRAD = 4;

  readonly attribute unsigned short unitType;
           attribute float value;
           attribute float valueInSpecifiedUnits;
           attribute DOMString valueAsString;

  undefined newValueSpecifiedUnits(unsigned short unitType, float valueInSpecifiedUnits);
  undefined convertToSpecifiedUnits(unsigned short unitType);
};
[Exposed=Window]
interface SVGNumberList {

  readonly attribute unsigned long length;
  readonly attribute unsigned long numberOfItems;

  undefined clear();
  SVGNumber initialize(SVGNumber newItem);
  getter SVGNumber getItem(unsigned long index);
  SVGNumber insertItemBefore(SVGNumber newItem, unsigned long index);
  SVGNumber replaceItem(SVGNumber newItem, unsigned long index);
  SVGNumber removeItem(unsigned long index);
  SVGNumber appendItem(SVGNumber newItem);
  setter undefined (unsigned long index, SVGNumber newItem);
};
[Exposed=Window]
interface SVGLengthList {

  readonly attribute unsigned long length;
  readonly attribute unsigned long numberOfItems;

  undefined clear();
  SVGLength initialize(SVGLength newItem);
  getter SVGLength getItem(unsigned long index);
  SVGLength insertItemBefore(SVGLength newItem, unsigned long index);
  SVGLength replaceItem(SVGLength newItem, unsigned long index);
  SVGLength removeItem(unsigned long index);
  SVGLength appendItem(SVGLength newItem);
  setter undefined (unsigned long index, SVGLength newItem);
};
[Exposed=Window]
interface SVGStringList {

  readonly attribute unsigned long length;
  readonly attribute unsigned long numberOfItems;

  undefined clear();
  DOMString initialize(DOMString newItem);
  getter DOMString getItem(unsigned long index);
  DOMString insertItemBefore(DOMString newItem, unsigned long index);
  DOMString replaceItem(DOMString newItem, unsigned long index);
  DOMString removeItem(unsigned long index);
  DOMString appendItem(DOMString newItem);
  setter undefined (unsigned long index, DOMString newItem);
};
[Exposed=Window]
interface SVGAnimatedBoolean {
           attribute boolean baseVal;
  readonly attribute boolean animVal;
};
[Exposed=Window]
interface SVGAnimatedEnumeration {
           attribute unsigned short baseVal;
  readonly attribute unsigned short animVal;
};
[Exposed=Window]
interface SVGAnimatedInteger {
           attribute long baseVal;
  readonly attribute long animVal;
};
[Exposed=Window]
interface SVGAnimatedNumber {
           attribute float baseVal;
  readonly attribute float animVal;
};
[Exposed=Window]
interface SVGAnimatedLength {
  [SameObject] readonly attribute SVGLength baseVal;
  [SameObject] readonly attribute SVGLength animVal;
};
[Exposed=Window]
interface SVGAnimatedAngle {
  [SameObject] readonly attribute SVGAngle baseVal;
  [SameObject] readonly attribute SVGAngle animVal;
};
[Exposed=Window]
interface SVGAnimatedString {
           attribute (DOMString or TrustedScriptURL) baseVal;
  readonly attribute DOMString animVal;
};
[Exposed=Window]
interface SVGAnimatedRect {
  [SameObject] readonly attribute SVGRect baseVal;
  [SameObject] readonly attribute SVGRect animVal;
};
[Exposed=Window]
interface SVGAnimatedNumberList {
  [SameObject] readonly attribute SVGNumberList baseVal;
  [SameObject] readonly attribute SVGNumberList animVal;
};
[Exposed=Window]
interface SVGAnimatedLengthList {
  [SameObject] readonly attribute SVGLengthList baseVal;
  [SameObject] readonly attribute SVGLengthList animVal;
};
[Exposed=Window]
interface SVGUnitTypes {
  // Unit Types
  const unsigned short SVG_UNIT_TYPE_UNKNOWN = 0;
  const unsigned short SVG_UNIT_TYPE_USERSPACEONUSE = 1;
  const unsigned short SVG_UNIT_TYPE_OBJECTBOUNDINGBOX = 2;
};
interface mixin SVGTests {
  [SameObject] readonly attribute SVGStringList requiredExtensions;
  [SameObject] readonly attribute SVGStringList systemLanguage;
};
interface mixin SVGFitToViewBox {
  [SameObject] readonly attribute SVGAnimatedRect viewBox;
  [SameObject] readonly attribute SVGAnimatedPreserveAspectRatio preserveAspectRatio;
};
interface mixin SVGURIReference {
  [SameObject] readonly attribute SVGAnimatedString href;
};
partial interface Document {
  readonly attribute SVGSVGElement? rootElement;
};
[Exposed=Window]
interface SVGSVGElement : SVGGraphicsElement {

  [SameObject] readonly attribute SVGAnimatedLength x;
  [SameObject] readonly attribute SVGAnimatedLength y;
  [SameObject] readonly attribute SVGAnimatedLength width;
  [SameObject] readonly attribute SVGAnimatedLength height;

  attribute float currentScale;
  [SameObject] readonly attribute SVGPoint currentTranslate;

  NodeList getIntersectionList(SVGRect rect, SVGElement? referenceElement);
  NodeList getEnclosureList(SVGRect rect, SVGElement? referenceElement);
  boolean checkIntersection(SVGElement element, SVGRect rect);
  boolean checkEnclosure(SVGElement element, SVGRect rect);

  undefined deselectAll();

  [NewObject] SVGNumber createSVGNumber();
  [NewObject] SVGLength createSVGLength();
  [NewObject] SVGAngle createSVGAngle();
  [NewObject] SVGPoint createSVGPoint();
  [NewObject] SVGMatrix createSVGMatrix();
  [NewObject] SVGRect createSVGRect();
  [NewObject] SVGTransform createSVGTransform();
  [NewObject] SVGTransform createSVGTransformFromMatrix(optional DOMMatrix2DInit matrix = {});

  Element? getElementById(DOMString elementId);

  // Deprecated methods that have no effect when called,
  // but which are kept for compatibility reasons.
  unsigned long suspendRedraw(unsigned long maxWaitMilliseconds);
  undefined unsuspendRedraw(unsigned long suspendHandleID);
  undefined unsuspendRedrawAll();
  undefined forceRedraw();
};

SVGSVGElement includes SVGFitToViewBox;
SVGSVGElement includes WindowEventHandlers;
[Exposed=Window]
interface SVGGElement : SVGGraphicsElement {
};
[Exposed=Window]
interface SVGDefsElement : SVGGraphicsElement {
};
[Exposed=Window]
interface SVGDescElement : SVGElement {
};
[Exposed=Window]
interface SVGMetadataElement : SVGElement {
};
[Exposed=Window]
interface SVGTitleElement : SVGElement {
};
[Exposed=Window]
interface SVGSymbolElement : SVGGraphicsElement {
};

SVGSymbolElement includes SVGFitToViewBox;
[Exposed=Window]
interface SVGUseElement : SVGGraphicsElement {
  [SameObject] readonly attribute SVGAnimatedLength x;
  [SameObject] readonly attribute SVGAnimatedLength y;
  [SameObject] readonly attribute SVGAnimatedLength width;
  [SameObject] readonly attribute SVGAnimatedLength height;
};

SVGUseElement includes SVGURIReference;
[Exposed=Window]
interface SVGUseElementShadowRoot : ShadowRoot {
};
[Exposed=Window]
interface ShadowAnimation : Animation {
  constructor(Animation source, (Element or CSSPseudoElement) newTarget);
  [SameObject] readonly attribute Animation sourceAnimation;
};
[Exposed=Window]
interface SVGSwitchElement : SVGGraphicsElement {
};
interface mixin GetSVGDocument {
  Document getSVGDocument();
};
[Exposed=Window]
interface SVGStyleElement : SVGElement {
  [Reflect] attribute DOMString type;
  [Reflect] attribute DOMString media;
  [Reflect] attribute DOMString title;
  attribute boolean disabled;
};

SVGStyleElement includes LinkStyle;
[Exposed=Window]
interface SVGTransform {

  // Transform Types
  const unsigned short SVG_TRANSFORM_UNKNOWN = 0;
  const unsigned short SVG_TRANSFORM_MATRIX = 1;
  const unsigned short SVG_TRANSFORM_TRANSLATE = 2;
  const unsigned short SVG_TRANSFORM_SCALE = 3;
  const unsigned short SVG_TRANSFORM_ROTATE = 4;
  const unsigned short SVG_TRANSFORM_SKEWX = 5;
  const unsigned short SVG_TRANSFORM_SKEWY = 6;

  readonly attribute unsigned short type;
  [SameObject] readonly attribute SVGMatrix matrix;
  readonly attribute float angle;

  undefined setMatrix(optional DOMMatrix2DInit matrix = {});
  undefined setTranslate(float tx, float ty);
  undefined setScale(float sx, float sy);
  undefined setRotate(float angle, float cx, float cy);
  undefined setSkewX(float angle);
  undefined setSkewY(float angle);
};
[Exposed=Window]
interface SVGTransformList {

  readonly attribute unsigned long length;
  readonly attribute unsigned long numberOfItems;

  undefined clear();
  SVGTransform initialize(SVGTransform newItem);
  getter SVGTransform getItem(unsigned long index);
  SVGTransform insertItemBefore(SVGTransform newItem, unsigned long index);
  SVGTransform replaceItem(SVGTransform newItem, unsigned long index);
  SVGTransform removeItem(unsigned long index);
  SVGTransform appendItem(SVGTransform newItem);
  setter undefined (unsigned long index, SVGTransform newItem);

  // Additional methods not common to other list interfaces.
  SVGTransform createSVGTransformFromMatrix(optional DOMMatrix2DInit matrix = {});
  SVGTransform? consolidate();
};
[Exposed=Window]
interface SVGAnimatedTransformList {
  [SameObject] readonly attribute SVGTransformList baseVal;
  [SameObject] readonly attribute SVGTransformList animVal;
};
[Exposed=Window]
interface SVGPreserveAspectRatio {

  // Alignment Types
  const unsigned short SVG_PRESERVEASPECTRATIO_UNKNOWN = 0;
  const unsigned short SVG_PRESERVEASPECTRATIO_NONE = 1;
  const unsigned short SVG_PRESERVEASPECTRATIO_XMINYMIN = 2;
  const unsigned short SVG_PRESERVEASPECTRATIO_XMIDYMIN = 3;
  const unsigned short SVG_PRESERVEASPECTRATIO_XMAXYMIN = 4;
  const unsigned short SVG_PRESERVEASPECTRATIO_XMINYMID = 5;
  const unsigned short SVG_PRESERVEASPECTRATIO_XMIDYMID = 6;
  const unsigned short SVG_PRESERVEASPECTRATIO_XMAXYMID = 7;
  const unsigned short SVG_PRESERVEASPECTRATIO_XMINYMAX = 8;
  const unsigned short SVG_PRESERVEASPECTRATIO_XMIDYMAX = 9;
  const unsigned short SVG_PRESERVEASPECTRATIO_XMAXYMAX = 10;

  // Meet-or-slice Types
  const unsigned short SVG_MEETORSLICE_UNKNOWN = 0;
  const unsigned short SVG_MEETORSLICE_MEET = 1;
  const unsigned short SVG_MEETORSLICE_SLICE = 2;

  attribute unsigned short align;
  attribute unsigned short meetOrSlice;
};
[Exposed=Window]
interface SVGAnimatedPreserveAspectRatio {
  [SameObject] readonly attribute SVGPreserveAspectRatio baseVal;
  [SameObject] readonly attribute SVGPreserveAspectRatio animVal;
};
[Exposed=Window]
interface SVGPathElement : SVGGeometryElement {
};
[Exposed=Window]
interface SVGRectElement : SVGGeometryElement {
  [SameObject] readonly attribute SVGAnimatedLength x;
  [SameObject] readonly attribute SVGAnimatedLength y;
  [SameObject] readonly attribute SVGAnimatedLength width;
  [SameObject] readonly attribute SVGAnimatedLength height;
  [SameObject] readonly attribute SVGAnimatedLength rx;
  [SameObject] readonly attribute SVGAnimatedLength ry;
};
[Exposed=Window]
interface SVGCircleElement : SVGGeometryElement {
  [SameObject] readonly attribute SVGAnimatedLength cx;
  [SameObject] readonly attribute SVGAnimatedLength cy;
  [SameObject] readonly attribute SVGAnimatedLength r;
};
[Exposed=Window]
interface SVGEllipseElement : SVGGeometryElement {
  [SameObject] readonly attribute SVGAnimatedLength cx;
  [SameObject] readonly attribute SVGAnimatedLength cy;
  [SameObject] readonly attribute SVGAnimatedLength rx;
  [SameObject] readonly attribute SVGAnimatedLength ry;
};
[Exposed=Window]
interface SVGLineElement : SVGGeometryElement {
  [SameObject] readonly attribute SVGAnimatedLength x1;
  [SameObject] readonly attribute SVGAnimatedLength y1;
  [SameObject] readonly attribute SVGAnimatedLength x2;
  [SameObject] readonly attribute SVGAnimatedLength y2;
};
interface mixin SVGAnimatedPoints {
  [SameObject] readonly attribute SVGPointList points;
  [SameObject] readonly attribute SVGPointList animatedPoints;
};
[Exposed=Window]
interface SVGPointList {

  readonly attribute unsigned long length;
  readonly attribute unsigned long numberOfItems;

  undefined clear();
  SVGPoint initialize(SVGPoint newItem);
  getter SVGPoint getItem(unsigned long index);
  SVGPoint insertItemBefore(SVGPoint newItem, unsigned long index);
  SVGPoint replaceItem(SVGPoint newItem, unsigned long index);
  SVGPoint removeItem(unsigned long index);
  SVGPoint appendItem(SVGPoint newItem);
  setter undefined (unsigned long index, SVGPoint newItem);
};
[Exposed=Window]
interface SVGPolylineElement : SVGGeometryElement {
};

SVGPolylineElement includes SVGAnimatedPoints;
[Exposed=Window]
interface SVGPolygonElement : SVGGeometryElement {
};

SVGPolygonElement includes SVGAnimatedPoints;
[Exposed=Window]
interface SVGTextContentElement : SVGGraphicsElement {

  // lengthAdjust Types
  const unsigned short LENGTHADJUST_UNKNOWN = 0;
  const unsigned short LENGTHADJUST_SPACING = 1;
  const unsigned short LENGTHADJUST_SPACINGANDGLYPHS = 2;

  [SameObject] readonly attribute SVGAnimatedLength textLength;
  [SameObject] readonly attribute SVGAnimatedEnumeration lengthAdjust;

  long getNumberOfChars();
  float getComputedTextLength();
  float getSubStringLength(unsigned long charnum, unsigned long nchars);
  SVGPoint getStartPositionOfChar(unsigned long charnum);
  SVGPoint getEndPositionOfChar(unsigned long charnum);
  SVGRect getExtentOfChar(unsigned long charnum);
  float getRotationOfChar(unsigned long charnum);
  long getCharNumAtPosition(optional DOMPointInit point = {});
  undefined selectSubString(unsigned long charnum, unsigned long nchars);
};
[Exposed=Window]
interface SVGTextPositioningElement : SVGTextContentElement {
  [SameObject] readonly attribute SVGAnimatedLengthList x;
  [SameObject] readonly attribute SVGAnimatedLengthList y;
  [SameObject] readonly attribute SVGAnimatedLengthList dx;
  [SameObject] readonly attribute SVGAnimatedLengthList dy;
  [SameObject] readonly attribute SVGAnimatedNumberList rotate;
};
[Exposed=Window]
interface SVGTextElement : SVGTextPositioningElement {
};
[Exposed=Window]
interface SVGTSpanElement : SVGTextPositioningElement {
};
[Exposed=Window]
interface SVGTextPathElement : SVGTextContentElement {

  // textPath Method Types
  const unsigned short TEXTPATH_METHODTYPE_UNKNOWN = 0;
  const unsigned short TEXTPATH_METHODTYPE_ALIGN = 1;
  const unsigned short TEXTPATH_METHODTYPE_STRETCH = 2;

  // textPath Spacing Types
  const unsigned short TEXTPATH_SPACINGTYPE_UNKNOWN = 0;
  const unsigned short TEXTPATH_SPACINGTYPE_AUTO = 1;
  const unsigned short TEXTPATH_SPACINGTYPE_EXACT = 2;

  // textPath Side Types
  const unsigned short TEXTPATH_SIDETYPE_UNKNOWN = 0;
  const unsigned short TEXTPATH_SIDETYPE_LEFT = 1;
  const unsigned short TEXTPATH_SIDETYPE_RIGHT = 2;

  [SameObject] readonly attribute SVGAnimatedLength startOffset;
  [SameObject] readonly attribute SVGAnimatedEnumeration method;
  [SameObject] readonly attribute SVGAnimatedEnumeration spacing;
  [SameObject] readonly attribute SVGAnimatedEnumeration side;
};

SVGTextPathElement includes SVGURIReference;
[Exposed=Window]
interface SVGImageElement : SVGGraphicsElement {
  [SameObject] readonly attribute SVGAnimatedLength x;
  [SameObject] readonly attribute SVGAnimatedLength y;
  [SameObject] readonly attribute SVGAnimatedLength width;
  [SameObject] readonly attribute SVGAnimatedLength height;
  [SameObject] readonly attribute SVGAnimatedPreserveAspectRatio preserveAspectRatio;
  attribute DOMString? crossOrigin;
  attribute DOMString referrerPolicy;
};

SVGImageElement includes SVGURIReference;
[Exposed=Window]
interface SVGForeignObjectElement : SVGGraphicsElement {
  [SameObject] readonly attribute SVGAnimatedLength x;
  [SameObject] readonly attribute SVGAnimatedLength y;
  [SameObject] readonly attribute SVGAnimatedLength width;
  [SameObject] readonly attribute SVGAnimatedLength height;
};
[Exposed=Window]
interface SVGMarkerElement : SVGElement {

  // Marker Unit Types
  const unsigned short SVG_MARKERUNITS_UNKNOWN = 0;
  const unsigned short SVG_MARKERUNITS_USERSPACEONUSE = 1;
  const unsigned short SVG_MARKERUNITS_STROKEWIDTH = 2;

  // Marker Orientation Types
  const unsigned short SVG_MARKER_ORIENT_UNKNOWN = 0;
  const unsigned short SVG_MARKER_ORIENT_AUTO = 1;
  const unsigned short SVG_MARKER_ORIENT_ANGLE = 2;
  const unsigned short SVG_MARKER_ORIENT_AUTO_START_REVERSE = 3;

  [SameObject] readonly attribute SVGAnimatedLength refX;
  [SameObject] readonly attribute SVGAnimatedLength refY;
  [SameObject] readonly attribute SVGAnimatedEnumeration markerUnits;
  [SameObject] readonly attribute SVGAnimatedLength markerWidth;
  [SameObject] readonly attribute SVGAnimatedLength markerHeight;
  [SameObject] readonly attribute SVGAnimatedEnumeration orientType;
  [SameObject] readonly attribute SVGAnimatedAngle orientAngle;
  attribute DOMString orient;

  undefined setOrientToAuto();
  undefined setOrientToAngle(SVGAngle angle);
};

SVGMarkerElement includes SVGFitToViewBox;
[Exposed=Window]
interface SVGGradientElement : SVGElement {

  // Spread Method Types
  const unsigned short SVG_SPREADMETHOD_UNKNOWN = 0;
  const unsigned short SVG_SPREADMETHOD_PAD = 1;
  const unsigned short SVG_SPREADMETHOD_REFLECT = 2;
  const unsigned short SVG_SPREADMETHOD_REPEAT = 3;

  [SameObject] readonly attribute SVGAnimatedEnumeration gradientUnits;
  [SameObject] readonly attribute SVGAnimatedTransformList gradientTransform;
  [SameObject] readonly attribute SVGAnimatedEnumeration spreadMethod;
};

SVGGradientElement includes SVGURIReference;

[Exposed=Window]
interface SVGLinearGradientElement : SVGGradientElement {
  [SameObject] readonly attribute SVGAnimatedLength x1;
  [SameObject] readonly attribute SVGAnimatedLength y1;
  [SameObject] readonly attribute SVGAnimatedLength x2;
  [SameObject] readonly attribute SVGAnimatedLength y2;
};
[Exposed=Window]
interface SVGRadialGradientElement : SVGGradientElement {
  [SameObject] readonly attribute SVGAnimatedLength cx;
  [SameObject] readonly attribute SVGAnimatedLength cy;
  [SameObject] readonly attribute SVGAnimatedLength r;
  [SameObject] readonly attribute SVGAnimatedLength fx;
  [SameObject] readonly attribute SVGAnimatedLength fy;
  [SameObject] readonly attribute SVGAnimatedLength fr;
};
[Exposed=Window]
interface SVGStopElement : SVGElement {
  [SameObject] readonly attribute SVGAnimatedNumber offset;
};
[Exposed=Window]
interface SVGPatternElement : SVGElement {
  [SameObject] readonly attribute SVGAnimatedEnumeration patternUnits;
  [SameObject] readonly attribute SVGAnimatedEnumeration patternContentUnits;
  [SameObject] readonly attribute SVGAnimatedTransformList patternTransform;
  [SameObject] readonly attribute SVGAnimatedLength x;
  [SameObject] readonly attribute SVGAnimatedLength y;
  [SameObject] readonly attribute SVGAnimatedLength width;
  [SameObject] readonly attribute SVGAnimatedLength height;
};

SVGPatternElement includes SVGFitToViewBox;
SVGPatternElement includes SVGURIReference;

[Exposed=Window]
interface SVGScriptElement : SVGElement {
  [Reflect] attribute DOMString type;
  attribute DOMString? crossOrigin;
  attribute DOMString referrerPolicy;
};

SVGScriptElement includes SVGURIReference;
[Exposed=Window]
interface SVGAElement : SVGGraphicsElement {
  [Reflect, SameObject] readonly attribute SVGAnimatedString target;
  [Reflect] attribute DOMString download;
  [Reflect] attribute USVString ping;
  [Reflect] attribute DOMString rel;
  [Reflect="rel", SameObject, PutForwards=value] readonly attribute DOMTokenList relList;
  [Reflect] attribute DOMString hreflang;
  [Reflect] attribute DOMString type;

  attribute DOMString referrerPolicy;
};

SVGAElement includes SVGURIReference;
SVGAElement includes HyperlinkElementUtils;
[Exposed=Window]
interface SVGViewElement : SVGElement {};

SVGViewElement includes SVGFitToViewBox;
Appendix A: IDL Definitions
