diff --git a/testdata/dot-ref/ViewColors.dot b/testdata/dot-ref/ViewColors.dot
index db991dd..a2f9334 100644
--- a/testdata/dot-ref/ViewColors.dot
+++ b/testdata/dot-ref/ViewColors.dot
@@ -7,16 +7,18 @@
 digraph G {
 	edge [fontname="Helvetica",fontsize=10,labelfontname="Helvetica",labelfontsize=10];
 	node [fontname="Helvetica",fontsize=10,shape=plaintext];
+	nodesep=0.25;
+	ranksep=0.5;
 	// gr.spinellis.basic.invoice.InvoiceItem
-	c164 [label=<<table border="0" cellborder="1" cellspacing="0" cellpadding="2" port="p" bgcolor="yellow"><tr><td><table border="0" cellspacing="0" cellpadding="1"><tr><td align="center" balign="center"> InvoiceItem </td></tr></table></td></tr></table>>, fontname="Helvetica", fontcolor="black", fontsize=10.0];
+	c164 [label=<<table title="gr.spinellis.basic.invoice.InvoiceItem" border="0" cellborder="1" cellspacing="0" cellpadding="2" port="p" bgcolor="yellow"><tr><td><table border="0" cellspacing="0" cellpadding="1"><tr><td align="center" balign="center"> InvoiceItem </td></tr></table></td></tr></table>>, fontname="Helvetica", fontcolor="black", fontsize=10.0];
 	// gr.spinellis.basic.invoice.Invoice
-	c165 [label=<<table border="0" cellborder="1" cellspacing="0" cellpadding="2" port="p" bgcolor="yellow"><tr><td><table border="0" cellspacing="0" cellpadding="1"><tr><td align="center" balign="center"> Invoice </td></tr></table></td></tr></table>>, fontname="Helvetica", fontcolor="black", fontsize=10.0];
+	c165 [label=<<table title="gr.spinellis.basic.invoice.Invoice" border="0" cellborder="1" cellspacing="0" cellpadding="2" port="p" bgcolor="yellow"><tr><td><table border="0" cellspacing="0" cellpadding="1"><tr><td align="center" balign="center"> Invoice </td></tr></table></td></tr></table>>, fontname="Helvetica", fontcolor="black", fontsize=10.0];
 	// gr.spinellis.basic.invoice.Customer
-	c166 [label=<<table border="0" cellborder="1" cellspacing="0" cellpadding="2" port="p" bgcolor="yellow"><tr><td><table border="0" cellspacing="0" cellpadding="1"><tr><td align="center" balign="center"> Customer </td></tr></table></td></tr></table>>, fontname="Helvetica", fontcolor="black", fontsize=10.0];
+	c166 [label=<<table title="gr.spinellis.basic.invoice.Customer" border="0" cellborder="1" cellspacing="0" cellpadding="2" port="p" bgcolor="yellow"><tr><td><table border="0" cellspacing="0" cellpadding="1"><tr><td align="center" balign="center"> Customer </td></tr></table></td></tr></table>>, fontname="Helvetica", fontcolor="black", fontsize=10.0];
 	// gr.spinellis.basic.product.Product
-	c167 [label=<<table border="0" cellborder="1" cellspacing="0" cellpadding="2" port="p" bgcolor="yellow"><tr><td><table border="0" cellspacing="0" cellpadding="1"><tr><td align="center" balign="center"> Product </td></tr></table></td></tr></table>>, fontname="Helvetica", fontcolor="black", fontsize=10.0];
+	c167 [label=<<table title="gr.spinellis.basic.product.Product" border="0" cellborder="1" cellspacing="0" cellpadding="2" port="p" bgcolor="yellow"><tr><td><table border="0" cellspacing="0" cellpadding="1"><tr><td align="center" balign="center"> Product </td></tr></table></td></tr></table>>, fontname="Helvetica", fontcolor="black", fontsize=10.0];
 	// gr.spinellis.basic.product.Category
-	c168 [label=<<table border="0" cellborder="1" cellspacing="0" cellpadding="2" port="p" bgcolor="yellow"><tr><td><table border="0" cellspacing="0" cellpadding="1"><tr><td align="center" balign="center"> Category </td></tr></table></td></tr></table>>, fontname="Helvetica", fontcolor="black", fontsize=10.0];
+	c168 [label=<<table title="gr.spinellis.basic.product.Category" border="0" cellborder="1" cellspacing="0" cellpadding="2" port="p" bgcolor="yellow"><tr><td><table border="0" cellspacing="0" cellpadding="1"><tr><td align="center" balign="center"> Category </td></tr></table></td></tr></table>>, fontname="Helvetica", fontcolor="black", fontsize=10.0];
 	// gr.spinellis.basic.invoice.InvoiceItem ASSOC gr.spinellis.basic.product.Product
 	c164:p -> c167:p [taillabel="*", label="", headlabel="1", fontname="Helvetica", fontcolor="black", fontsize=10.0, color="black", arrowhead=none];
 	// gr.spinellis.basic.invoice.Invoice ASSOC gr.spinellis.basic.invoice.Customer
@@ -28,6 +30,6 @@ digraph G {
 	// gr.spinellis.basic.product.Category DEPEND java.util.List<E>
 	c168:p -> c202:p [taillabel="", label="", headlabel="", fontname="Helvetica", fontcolor="black", fontsize=10.0, color="black", arrowhead=open, style=dashed];
 	// java.util.List<E>
-	c202 [label=<<table border="0" cellborder="1" cellspacing="0" cellpadding="2" port="p" bgcolor="gray" href="http://java.sun.com/j2se/1.4.2/docs/api/java/util/List.html"><tr><td><table border="0" cellspacing="0" cellpadding="1"><tr><td align="center" balign="center"> &#171;interface&#187; </td></tr><tr><td align="center" balign="center"> List&lt;E&gt; </td></tr></table></td></tr></table>>, fontname="Helvetica", fontcolor="black", fontsize=10.0];
+	c202 [label=<<table title="java.util.List" border="0" cellborder="1" cellspacing="0" cellpadding="2" port="p" bgcolor="gray" href="http://java.sun.com/j2se/1.4.2/docs/api/java/util/List.html"><tr><td><table border="0" cellspacing="0" cellpadding="1"><tr><td align="center" balign="center"> &#171;interface&#187; </td></tr><tr><td align="center" balign="center"> List&lt;E&gt; </td></tr></table></td></tr></table>>, fontname="Helvetica", fontcolor="black", fontsize=10.0];
 }