Edges without labels in the visualisation

[macleginn]

Cf. two unlabeled edges before 'onlookers' and the final stop:

XML:

<root annotationID="0" passageID="test_2017_mscoco.en.lc.norm_296">
  <attributes />
  <extra format="text" />
  <layer layerID="0">
    <attributes />
    <node ID="0.1" type="Word">
      <attributes paragraph="1" paragraph_position="1" text="onlookers" />
    </node>
    <node ID="0.2" type="Word">
      <attributes paragraph="1" paragraph_position="2" text="at" />
    </node>
    <node ID="0.3" type="Word">
      <attributes paragraph="1" paragraph_position="3" text="a" />
    </node>
    <node ID="0.4" type="Word">
      <attributes paragraph="1" paragraph_position="4" text="zoo" />
    </node>
    <node ID="0.5" type="Word">
      <attributes paragraph="1" paragraph_position="5" text="watch" />
    </node>
    <node ID="0.6" type="Word">
      <attributes paragraph="1" paragraph_position="6" text="an" />
    </node>
    <node ID="0.7" type="Word">
      <attributes paragraph="1" paragraph_position="7" text="african" />
    </node>
    <node ID="0.8" type="Word">
      <attributes paragraph="1" paragraph_position="8" text="elephant" />
    </node>
    <node ID="0.9" type="Punctuation">
      <attributes paragraph="1" paragraph_position="9" text="." />
    </node>
  </layer>
  <layer layerID="1">
    <attributes />
    <node ID="1.1" type="FN">
      <attributes />
      <edge toID="1.2" type="A">
        <attributes />
      </edge>
      <edge toID="1.3" type="P">
        <attributes />
      </edge>
      <edge toID="1.4" type="A">
        <attributes />
      </edge>
      <edge toID="1.5" type="P">
        <attributes />
      </edge>
      <edge toID="1.6" type="U">
        <attributes />
      </edge>
    </node>
    <node ID="1.2" type="FN">
      <attributes />
      <edge toID="1.7" type="R">
        <attributes />
      </edge>
      <edge toID="1.8" type="E">
        <attributes />
      </edge>
      <edge toID="1.9" type="C">
        <attributes />
      </edge>
    </node>
    <node ID="1.3" type="FN">
      <attributes />
      <edge toID="0.5" type="Terminal">
        <attributes />
      </edge>
    </node>
    <node ID="1.4" type="FN">
      <attributes />
      <edge toID="1.10" type="E">
        <attributes />
      </edge>
      <edge toID="1.11" type="E">
        <attributes />
      </edge>
      <edge toID="1.12" type="C">
        <attributes />
      </edge>
    </node>
    <node ID="1.5" type="FN">
      <attributes />
      <edge toID="0.1" type="Terminal">
        <attributes />
      </edge>
    </node>
    <node ID="1.6" type="PNCT">
      <attributes />
      <edge toID="0.9" type="Terminal">
        <attributes />
      </edge>
    </node>
    <node ID="1.7" type="FN">
      <attributes />
      <edge toID="0.2" type="Terminal">
        <attributes />
      </edge>
    </node>
    <node ID="1.8" type="FN">
      <attributes />
      <edge toID="0.3" type="Terminal">
        <attributes />
      </edge>
    </node>
    <node ID="1.9" type="FN">
      <attributes />
      <edge toID="0.4" type="Terminal">
        <attributes />
      </edge>
    </node>
    <node ID="1.10" type="FN">
      <attributes />
      <edge toID="0.6" type="Terminal">
        <attributes />
      </edge>
    </node>
    <node ID="1.11" type="FN">
      <attributes />
      <edge toID="0.7" type="Terminal">
        <attributes />
      </edge>
    </node>
    <node ID="1.12" type="FN">
      <attributes />
      <edge toID="0.8" type="Terminal">
        <attributes />
      </edge>
    </node>
  </layer>
</root>

[danielhers]

They actually have labels, they're just hidden behind the nodes in the middle. onlookers and . are children of the root, and their incoming edges coincide with the two other children of the root.