w3l-xgmml/xgmml/example1.gr

<?xml version="1.0"?>
<!DOCTYPE graph SYSTEM "xgmml.dtd">
<graph directed="1" id="42" label="Hello, I am a graph" >
<node id="1" label="node 1" >
</node> 
<node id="2" label="node 2" >
</node> 
<node id="3" label="node 3" >
</node> 
<edge source="1" target="2" label="Edge from node 1 to node 2" >
</edge> 
<edge source="2" target="3" label="Edge from node 2 to node 3" >
</edge> 
<edge source="3" target="1" label="Edge from node 3 to node 1" >
</edge> 
</graph>