cyphesis/data/mars/basic.xml

<atlas>

  <map>
    <map name="attributes">
      <map name="solid">
        <int name="default">0</int>
        <string name="visibility">public</string>
      </map>
    </map>
    <string name="id">area</string>
    <string name="objtype">class</string>
    <string name="parent">feature</string>
  </map>

  <map>
    <map name="attributes">
    </map>
    <string name="id">feature</string>
    <string name="objtype">class</string>
    <string name="parent">thing</string>
  </map>

  <map>
    <map name="attributes">
      <map name="bbox">
        <list name="default">
          <float>-0.25</float>
          <float>-0.25</float>
          <float>-0.25</float>
          <float>0.25</float>
          <float>0.25</float>
          <float>0.25</float>
        </list>
        <string name="visibility">public</string>
      </map>
      <map name="mass">
        <float name="default">5</float>
        <string name="visibility">public</string>
      </map>
    </map>
    <string name="id">rock</string>
    <string name="objtype">class</string>
    <string name="parent">thing</string>
  </map>

</atlas>