0 -> node1 -> node2
}
</XMP>
yields the figure<BR>
<IMG SRC=fill.gif>

<DT><A NAME=d:invisible></A><TT>invisible</TT>
  <DD>Setting this style causes the node not to be displayed at all.
Note that the node is still used in laying out the graph.

<DT><A NAME=d:diagonals></A><TT>diagonals</TT>
  <DD>The diagonals style causes small chords to be drawn near the vertices
of the node's polygon or, in case of circles and ellipses, two chords near
the top and the bottom of the shape. The special node shapes
<A HREF