http://xml.apache.org/commons/components/external/: xml-commons provides an Apache-hosted set of DOM, SAX, and JAXP interfaces for use in other xml-based projects. Our hope is that we can standardize on both a common version and packaging scheme for these critical XML standards interfaces to make the lives of both our developers and users easier. The External Components portion of xml-commons contains interfaces that are defined by external standards organizations. For DOM, that's the W3C; for SAX it's David Megginson and sax.sourceforge.net; for JAXP it's Sun. 

package org.w3c.dom.svg;

public interface SVGFEBlendElement extends 
               SVGElement,
               SVGFilterPrimitiveStandardAttributes {
  // Blend Mode Types
  public static final short SVG_FEBLEND_MODE_UNKNOWN  = 0;
  public static final short SVG_FEBLEND_MODE_NORMAL   = 1;
  public static final short SVG_FEBLEND_MODE_MULTIPLY = 2;
  public static final short SVG_FEBLEND_MODE_SCREEN   = 3;
  public static final short SVG_FEBLEND_MODE_DARKEN   = 4;
  public static final short SVG_FEBLEND_MODE_LIGHTEN  = 5;

  public SVGAnimatedString      getIn1( );
  public SVGAnimatedString      getIn2( );
  public SVGAnimatedEnumeration getMode( );
}