digraph structs {
    node [shape=table];

    struct1 [label=<<TABLE CELLPADDING="10" BORDER="0">
	<TR>
	    <TD  FIXEDSIZE="true" HEIGHT="30" WIDTH="90">a</TD>
	    <TD>b</TD>
	    <TD>c</TD>
	</TR>
    </TABLE>>];

    struct2 [label=<<TABLE>
	<TR>
	    <TD COLSPAN="3">elefantel</TD>
	    <TD ROWSPAN="2" VALIGN="bottom" HALIGN="right">two</TD>
	</TR><TR>
	    <TD COLSPAN="2" ROWSPAN="2"><TABLE BGCOLOR="grey">
		<TR>
		    <TD>buca</TD>
		</TR><TR>
		    <TD BGCOLOR="yellow">c</TD>
		</TR><TR>
		    <TD>f</TD>
		</TR>
	    </TABLE></TD>
	    <TD>patratos</TD>
	</TR><TR>
	    <TD COLSPAN="2" HALIGN="right">4</TD>
	</TR>
	</TABLE>
    >];

    struct3 [label=<<TABLE CELLPADDING="5">
	<TR>
	    <TD ROWSPAN="3">Hello</TD>
	    <TD ROWSPAN="2" COLSPAN="3"><TABLE BORDER="4">
		<TR>
		    <TD COLSPAN="3">b</TD>
		</TR><TR>
		    <TD>a</TD>
		    <TD>dino</TD>
		    <TD>y</TD>
		</TR><TR>
		    <TD COLSPAN="3">rhino</TD>
		</TR>
	    </TABLE></TD>
	</TR><TR>
	    <TD COLSPAN="2">climb</TD>
	    <TD ROWSPAN="2">Up</TD>
	</TR><TR>
	    <TD COLSPAN="3">low</TD>
	</TR>
    </TABLE>>];

    struct1 -> struct3;
    struct1 -> struct2;
}