<Morphology>

    <Segment   id="seg1"    region="dend">
        <start x="0.0"    y="0.0" z="0.0" r="0.5" />
        <end   x="1.0"    y="0.0" z="0.0" r="0.5" label="pointA"/>
    </Segment>

</Morphology>