diff --git a/Doc/Sda1/dom.xml b/Doc/Sda1/dom.xml
index 4471e371af5aa1f0ef3a3d632b717de8aa70a9cf..9a0a0882e7bc93aadb63762cb5664eebd9ee29f4 100644
--- a/Doc/Sda1/dom.xml
+++ b/Doc/Sda1/dom.xml
@@ -1616,14 +1616,20 @@ public class DomXpath {
         <qandadiv>
           <qandaentry>
             <question>
-              <para>Casts in XPath expression related queries are just ugly.
-              We may get rid of this problem using Filter instances.</para>
+              <para>Casts in XPath expression related queries (and elsewhere!)
+              being required is just ugly. We may get rid of this problem
+              using <classname
+              xlink:href="http://www.jdom.org/docs/apidocs/org/jdom2/filter/Filters.html">Filters</classname>
+              instances.</para>
 
               <para>Re-write <xref linkend="domFindImages"/> avoiding casts
               completely.</para>
 
               <tip>
-                <para>Use the <methodname
+                <para>Read <quote
+                xlink:href="http://www.programcreek.com/java-api-examples/index.php?api=org.jdom2.filter.Filters#115369">Java
+                Code Examples for org.jdom2.filter.Filters</quote> and use the
+                <methodname
                 xlink:href="http://www.jdom.org/docs/apidocs/org/jdom2/xpath/XPathFactory.html#compile(java.lang.String,%20org.jdom2.filter.Filter)">compile(...)</methodname>
                 method.</para>
               </tip>