M0: hierarchical graph (GXL-Representation)
M0:     GXL     Graph	no instances for M0-graphs
M1:     GXL     Graph     UML
M2:     GXL     Graph     UML

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE gxl SYSTEM "http://www.gupro.de/GXL/gxl-1.0.dtd">
<!--hierarchical garhp II 05.02.2002 -->
<gxl xmlns:xlink=" http://www.w3.org/1999/xlink">
  <graph id="hierarchicalGraph-instance" edgeids=" false" edgemode=" directed" hypergraph=" false">
    <type xlink:href="http://www.gupro.de/GXL/examples/schema/gxl/hierarchicalGraph/hierarchicalGraphSchema.gxl#hierarchicalGraphSchema" xlink:type=" simple"/>
    <node id="v4">
      <type xlink:href="http://www.gupro.de/GXL/examples/schema/gxl/hierarchicalGraph/hierarchicalGraphSchema.gxl#Function" xlink:type=" simple"/>
      <attr name=" name">
        <string> max</string>
      </attr>
      <graph id="max" edgeids=" true" edgemode=" directed" hypergraph=" false">
        <type xlink:href="http://www.gupro.de/GXL/examples/schema/gxl/hierarchicalGraph/hierarchicalGraphSchema.gxl#Asg" xlink:type=" simple"/>
        <node id="v4.1">
          <type xlink:href="http://www.gupro.de/GXL/examples/schema/gxl/hierarchicalGraph/hierarchicalGraphSchema.gxl#Interface" xlink:type=" simple"/>
        </node>
        <node id="v4.2">
          <type xlink:href="http://www.gupro.de/GXL/examples/schema/gxl/hierarchicalGraph/hierarchicalGraphSchema.gxl#IfStmt" xlink:type=" simple"/>
        </node>
        <node id="v4.3">
          <type xlink:href="http://www.gupro.de/GXL/examples/schema/gxl/hierarchicalGraph/hierarchicalGraphSchema.gxl#OpExpr" xlink:type=" simple"/>
        </node>
        <node id="v4.4">
          <type xlink:href="http://www.gupro.de/GXL/examples/schema/gxl/hierarchicalGraph/hierarchicalGraphSchema.gxl#ReturnStmt" xlink:type=" simple"/>
        </node>
        <node id="v4.5">
          <type xlink:href="http://www.gupro.de/GXL/examples/schema/gxl/hierarchicalGraph/hierarchicalGraphSchema.gxl#ReturnStmt" xlink:type=" simple"/>
        </node>
        <node id="v4.6">
          <type xlink:href="http://www.gupro.de/GXL/examples/schema/gxl/hierarchicalGraph/hierarchicalGraphSchema.gxl#Variable" xlink:type=" simple"/>
          <attr name=" name">
            <string> x</string>
          </attr>
        </node>
        <node id="v4.7">
          <type xlink:href="http://www.gupro.de/GXL/examples/schema/gxl/hierarchicalGraph/hierarchicalGraphSchema.gxl#Variable" xlink:type=" simple"/>
          <attr name=" name">
            <string> y</string>
          </attr>
        </node>
        <node id="v4.8">
          <type xlink:href="http://www.gupro.de/GXL/examples/schema/gxl/hierarchicalGraph/hierarchicalGraphSchema.gxl#Operator" xlink:type=" simple"/>
          <attr name=" name">
            <string> <</string>
          </attr>
        </node>
        <edge id="e4.1" to="v4.1" from="v4.6" toorder=" 1">
          <type xlink:href="http://www.gupro.de/GXL/examples/schema/gxl/hierarchicalGraph/hierarchicalGraphSchema.gxl#isFormalInput" xlink:type=" simple"/>
        </edge>
        <edge id="e4.2" to="v4.1" from="v4.7" toorder=" 2">
          <type xlink:href="http://www.gupro.de/GXL/examples/schema/gxl/hierarchicalGraph/hierarchicalGraphSchema.gxl#isFormalInput" xlink:type=" simple"/>
        </edge>
        <edge id="e4.3" to="v4.1" from="v4.6">
          <type xlink:href="http://www.gupro.de/GXL/examples/schema/gxl/hierarchicalGraph/hierarchicalGraphSchema.gxl#isFormalOutput" xlink:type=" simple"/>
        </edge>
        <edge id="e4.4" to="v4.1" from="v4.7">
          <type xlink:href="http://www.gupro.de/GXL/examples/schema/gxl/hierarchicalGraph/hierarchicalGraphSchema.gxl#isFormalOutput" xlink:type=" simple"/>
        </edge>
        <edge id="e4.5" to="v4.2" from="v4.4">
          <type xlink:href="http://www.gupro.de/GXL/examples/schema/gxl/hierarchicalGraph/hierarchicalGraphSchema.gxl#isTrueStmt" xlink:type=" simple"/>
        </edge>
        <edge id="e4.6" to="v4.2" from="v4.5">
          <type xlink:href="http://www.gupro.de/GXL/examples/schema/gxl/hierarchicalGraph/hierarchicalGraphSchema.gxl#isFalseStmt" xlink:type=" simple"/>
        </edge>
        <edge id="e4.7" to="v4.2" from="v4.3">
          <type xlink:href="http://www.gupro.de/GXL/examples/schema/gxl/hierarchicalGraph/hierarchicalGraphSchema.gxl#isPredicate" xlink:type=" simple"/>
        </edge>
        <edge id="e4.8" to="v4.3" from="v4.6" toorder=" 1">
          <type xlink:href="http://www.gupro.de/GXL/examples/schema/gxl/hierarchicalGraph/hierarchicalGraphSchema.gxl#isOperand" xlink:type=" simple"/>
        </edge>
        <edge id="e4.9" to="v4.3" from="v4.7" toorder=" 2">
          <type xlink:href="http://www.gupro.de/GXL/examples/schema/gxl/hierarchicalGraph/hierarchicalGraphSchema.gxl#isOperand" xlink:type=" simple"/>
        </edge>
        <edge id="e4.10" to="v4.3" from="v4.8">
          <type xlink:href="http://www.gupro.de/GXL/examples/schema/gxl/hierarchicalGraph/hierarchicalGraphSchema.gxl#isOperator" xlink:type=" simple"/>
        </edge>
        <edge id="e4.11" to="v4.4" from="v4.6">
          <type xlink:href="http://www.gupro.de/GXL/examples/schema/gxl/hierarchicalGraph/hierarchicalGraphSchema.gxl#isReturnValue" xlink:type=" simple"/>
        </edge>
        <edge id="e4.12" to="v4.5" from="v4.7">
          <type xlink:href="http://www.gupro.de/GXL/examples/schema/gxl/hierarchicalGraph/hierarchicalGraphSchema.gxl#isReturnValue" xlink:type=" simple"/>
        </edge>
      </graph>
    </node>
  </graph>
</gxl>