diff --git a/testdata/dot-ref/ViewAllDetailed.dot b/testdata/dot-ref/ViewAllDetailed.dot
index 5d9de6e..c616fd1 100644
--- a/testdata/dot-ref/ViewAllDetailed.dot
+++ b/testdata/dot-ref/ViewAllDetailed.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
-	c317 [label=<<table border="0" cellborder="1" cellspacing="0" cellpadding="2" port="p"><tr><td><table border="0" cellspacing="0" cellpadding="1"><tr><td align="center" balign="center"> InvoiceItem </td></tr></table></td></tr><tr><td><table border="0" cellspacing="0" cellpadding="1"><tr><td align="left" balign="left">  product : Product </td></tr><tr><td align="left" balign="left">  quantity : int </td></tr></table></td></tr><tr><td><table border="0" cellspacing="0" cellpadding="1"><tr><td align="left" balign="left">  </td></tr></table></td></tr></table>>, fontname="Helvetica", fontcolor="black", fontsize=10.0];
+	c317 [label=<<table title="gr.spinellis.basic.invoice.InvoiceItem" border="0" cellborder="1" cellspacing="0" cellpadding="2" port="p"><tr><td><table border="0" cellspacing="0" cellpadding="1"><tr><td align="center" balign="center"> InvoiceItem </td></tr></table></td></tr><tr><td><table border="0" cellspacing="0" cellpadding="1"><tr><td align="left" balign="left">  product : Product </td></tr><tr><td align="left" balign="left">  quantity : int </td></tr></table></td></tr><tr><td><table border="0" cellspacing="0" cellpadding="1"><tr><td align="left" balign="left">  </td></tr></table></td></tr></table>>, fontname="Helvetica", fontcolor="black", fontsize=10.0];
 	// gr.spinellis.basic.invoice.Invoice
-	c318 [label=<<table border="0" cellborder="1" cellspacing="0" cellpadding="2" port="p"><tr><td><table border="0" cellspacing="0" cellpadding="1"><tr><td align="center" balign="center"> Invoice </td></tr></table></td></tr><tr><td><table border="0" cellspacing="0" cellpadding="1"><tr><td align="left" balign="left">  total : double </td></tr><tr><td align="left" balign="left">  items : InvoiceItem[] </td></tr><tr><td align="left" balign="left">  customer : Customer </td></tr></table></td></tr><tr><td><table border="0" cellspacing="0" cellpadding="1"><tr><td align="left" balign="left">  addItem(p : Product, quantity : int) </td></tr></table></td></tr></table>>, fontname="Helvetica", fontcolor="black", fontsize=10.0];
+	c318 [label=<<table title="gr.spinellis.basic.invoice.Invoice" border="0" cellborder="1" cellspacing="0" cellpadding="2" port="p"><tr><td><table border="0" cellspacing="0" cellpadding="1"><tr><td align="center" balign="center"> Invoice </td></tr></table></td></tr><tr><td><table border="0" cellspacing="0" cellpadding="1"><tr><td align="left" balign="left">  total : double </td></tr><tr><td align="left" balign="left">  items : InvoiceItem[] </td></tr><tr><td align="left" balign="left">  customer : Customer </td></tr></table></td></tr><tr><td><table border="0" cellspacing="0" cellpadding="1"><tr><td align="left" balign="left">  addItem(p : Product, quantity : int) </td></tr></table></td></tr></table>>, fontname="Helvetica", fontcolor="black", fontsize=10.0];
 	// gr.spinellis.basic.invoice.Customer
-	c319 [label=<<table border="0" cellborder="1" cellspacing="0" cellpadding="2" port="p"><tr><td><table border="0" cellspacing="0" cellpadding="1"><tr><td align="center" balign="center"> Customer </td></tr></table></td></tr><tr><td><table border="0" cellspacing="0" cellpadding="1"><tr><td align="left" balign="left">  name : String </td></tr></table></td></tr><tr><td><table border="0" cellspacing="0" cellpadding="1"><tr><td align="left" balign="left">  </td></tr></table></td></tr></table>>, fontname="Helvetica", fontcolor="black", fontsize=10.0];
+	c319 [label=<<table title="gr.spinellis.basic.invoice.Customer" border="0" cellborder="1" cellspacing="0" cellpadding="2" port="p"><tr><td><table border="0" cellspacing="0" cellpadding="1"><tr><td align="center" balign="center"> Customer </td></tr></table></td></tr><tr><td><table border="0" cellspacing="0" cellpadding="1"><tr><td align="left" balign="left">  name : String </td></tr></table></td></tr><tr><td><table border="0" cellspacing="0" cellpadding="1"><tr><td align="left" balign="left">  </td></tr></table></td></tr></table>>, fontname="Helvetica", fontcolor="black", fontsize=10.0];
 	// gr.spinellis.basic.product.Product
-	c320 [label=<<table border="0" cellborder="1" cellspacing="0" cellpadding="2" port="p"><tr><td><table border="0" cellspacing="0" cellpadding="1"><tr><td align="center" balign="center"> Product </td></tr></table></td></tr><tr><td><table border="0" cellspacing="0" cellpadding="1"><tr><td align="left" balign="left">  name : String </td></tr><tr><td align="left" balign="left">  stock : int </td></tr><tr><td align="left" balign="left">  price : double </td></tr><tr><td align="left" balign="left">  category : Category </td></tr></table></td></tr><tr><td><table border="0" cellspacing="0" cellpadding="1"><tr><td align="left" balign="left">  </td></tr></table></td></tr></table>>, fontname="Helvetica", fontcolor="black", fontsize=10.0];
+	c320 [label=<<table title="gr.spinellis.basic.product.Product" border="0" cellborder="1" cellspacing="0" cellpadding="2" port="p"><tr><td><table border="0" cellspacing="0" cellpadding="1"><tr><td align="center" balign="center"> Product </td></tr></table></td></tr><tr><td><table border="0" cellspacing="0" cellpadding="1"><tr><td align="left" balign="left">  name : String </td></tr><tr><td align="left" balign="left">  stock : int </td></tr><tr><td align="left" balign="left">  price : double </td></tr><tr><td align="left" balign="left">  category : Category </td></tr></table></td></tr><tr><td><table border="0" cellspacing="0" cellpadding="1"><tr><td align="left" balign="left">  </td></tr></table></td></tr></table>>, fontname="Helvetica", fontcolor="black", fontsize=10.0];
 	// gr.spinellis.basic.product.Category
-	c321 [label=<<table border="0" cellborder="1" cellspacing="0" cellpadding="2" port="p"><tr><td><table border="0" cellspacing="0" cellpadding="1"><tr><td align="center" balign="center"> Category </td></tr></table></td></tr><tr><td><table border="0" cellspacing="0" cellpadding="1"><tr><td align="left" balign="left">  name : String </td></tr><tr><td align="left" balign="left">  products : List&lt;&gt; </td></tr></table></td></tr><tr><td><table border="0" cellspacing="0" cellpadding="1"><tr><td align="left" balign="left">  </td></tr></table></td></tr></table>>, fontname="Helvetica", fontcolor="black", fontsize=10.0];
+	c321 [label=<<table title="gr.spinellis.basic.product.Category" border="0" cellborder="1" cellspacing="0" cellpadding="2" port="p"><tr><td><table border="0" cellspacing="0" cellpadding="1"><tr><td align="center" balign="center"> Category </td></tr></table></td></tr><tr><td><table border="0" cellspacing="0" cellpadding="1"><tr><td align="left" balign="left">  name : String </td></tr><tr><td align="left" balign="left">  products : List&lt;&gt; </td></tr></table></td></tr><tr><td><table border="0" cellspacing="0" cellpadding="1"><tr><td align="left" balign="left">  </td></tr></table></td></tr></table>>, fontname="Helvetica", fontcolor="black", fontsize=10.0];
 	// gr.spinellis.basic.invoice.InvoiceItem ASSOC gr.spinellis.basic.product.Product
 	c317:p -> c320: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