diff --git a/handbook/troggle/trogforms.html b/handbook/troggle/trogforms.html
index c2ae21e24..c8ba3b2c2 100644
--- a/handbook/troggle/trogforms.html
+++ b/handbook/troggle/trogforms.html
@@ -50,7 +50,7 @@ But if you haven't worked with HTML forms before, then you actually have <a href
 [This section to be moved to a generic Django Templating page]
 <p> In  <a href="/repositories/troggle/.git/tree/templates/logbookentry.html">logbookentry.html</a> you will see the Django template code
   <code>{% for personlogentry in logbookentry.personlogentry_set.all %}</code>
-  which illustrates the for loop syntax, but also the my_object.attribute syntax, where the attribute is a one-to-many link to other Objects (instances of a Class) and has the <em>function</em> "_set" applied followed by the <a href="https://docs.djangoproject.com/en/5.1/ref/models/querysets/#django.db.models.query.QuerySet.all">QuerySet function</a> ".all". The effect of the for loop is to iterate through all the "personlogentry" instances  referenced by the specific "logbookentry" the page is looking at.  
+  which illustrates the for loop syntax, but also the my_object.attribute syntax, where the attribute is a one-to-many link to other Objects (instances of a Class) and has the <a href="https://dnmtechs.com/understanding-the-_set-attribute-in-django-querysets/"><em>function</em> "_set"</a> applied followed by the <a href="https://docs.djangoproject.com/en/5.1/ref/models/querysets/#django.db.models.query.QuerySet.all">QuerySet function</a> ".all". The effect of the for loop is to iterate through all the "personlogentry" instances  referenced by the specific "logbookentry" the page is looking at.  
 <p>For the relationship between LogBookEntry and PersonLogEntry click on 
   <a href="../l/trogclass-1.html">the Class diagram</a> on the right.