digraph G {
  rankdir=LR
  node [shape=plaintext]
  a [
     label=<
<TABLE BORDER="0" CELLBORDER="1" CELLSPACING="0">
  <TR><TD ROWSPAN="3" BGCOLOR="yellow">class</TD></TR>
  <TR><TD PORT="here" BGCOLOR="lightblue">qualifier</TD></TR>
</TABLE>>
  ]
    b [shape=ellipse style=filled
  href="http://www.graphviz.org/content/node-shapes"
  label=<
<TABLE BGCOLOR="bisque" href="http://www.graphviz.org/content/node-shapes#html">
  <TR><TD COLSPAN="3" BGCOLOR="bisque" href="http://go/wiki/Elephant">elephant</TD> 
      <TD ROWSPAN="2" BGCOLOR="chartreuse" 
          VALIGN="bottom" ALIGN="right">two</TD> </TR>
  <TR><TD COLSPAN="2" ROWSPAN="2">
        <TABLE BGCOLOR="grey" href="http://go/wiki/Grey">
          <TR> <TD href="http://go/wiki/Sweet_corn">corn</TD> </TR> 
          <TR> <TD BGCOLOR="yellow">c</TD> </TR> 
          <TR> <TD href="http://go/wiki/F">f</TD> </TR> 
        </TABLE> </TD>
      <TD BGCOLOR="white">penguin</TD> 
  </TR> 
  <TR> <TD COLSPAN="2" BORDER="4" ALIGN="right" PORT="there">4</TD> </TR>
</TABLE>>
  ]
  c [ 
  label=<long line 1<BR/>line 2<BR ALIGN="LEFT"/>line 3<BR ALIGN="RIGHT"/>>
  ]

  subgraph { rank=same b c }
  a:here -> b:there [dir=both, arrowtail = diamond]
  c -> b
  d [shape=triangle]
  d -> c [label=<
<TABLE>
  <TR><TD BGCOLOR="red" WIDTH="10"> </TD>
      <TD>Edge labels<BR/>also</TD>
      <TD BGCOLOR="blue" WIDTH="10"> </TD>
  </TR>
</TABLE>>
  ]
 
}