Basic SVG Shapes Attributes in XML

svg_shapes.xml

<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
<svg>
  <shapes>
    <shape element="rect">
      <name>rect</name>
      <attributes>
        <attribute attr="x">
          <key>x</key>
          <type>coordinate</type>
          <animatable>yes</animatable>
          <default>0</default>
          <datatype>float</datatype>
        </attribute>
        <attribute attr="y">
          <key>y</key>
          <type>coordinate</type>
          <animatable>yes</animatable>
          <default>0</default>
          <datatype>float</datatype>
        </attribute>
        <attribute attr="width">
          <key>width</key>
          <type>length</type>
          <animatable>yes</animatable>
          <default>none</default>
          <datatype>float</datatype>
        </attribute>
        <attribute attr="height">
          <key>height</key>
          <type>length</type>
          <animatable>yes</animatable>
          <default>none</default>
          <datatype>float</datatype>
        </attribute>
        <attribute attr="rx">
          <key>rx</key>
          <type>length</type>
          <animatable>yes</animatable>
          <default>null</default>
          <datatype>float</datatype>
        </attribute>
        <attribute attr="rx">
          <key>ry</key>
          <type>length</type>
          <animatable>yes</animatable>
          <default>null</default>
          <datatype>float</datatype>
        </attribute>
        
      </attributes>
    </shape>
  </shapes>  

</svg>