diff --git a/GeoModelExamples/SharedNodes/shared_serialtransformers.cpp b/GeoModelExamples/SharedNodes/shared_serialtransformers.cpp
index 240a10bfb50743874d42e58153b29d4c410cc668..3e11e9c0fd25fa75dac9e07cb1da6f7227197761 100644
--- a/GeoModelExamples/SharedNodes/shared_serialtransformers.cpp
+++ b/GeoModelExamples/SharedNodes/shared_serialtransformers.cpp
@@ -1,12 +1,12 @@
-// Copyright (C) 2002-2022 CERN for the benefit of the ATLAS collaboration
+// Copyright (C) 2002-2024 CERN for the benefit of the ATLAS collaboration
 
 /*
  * This example tests shared GeoSerialTransformer nodes.
  *
  * It creates one single LogVol, with one Material and one Shape.
  * Then it creates one single PhysVol volumes using the above LogVol.
- * Then it creates three SerialTrasnformers with different placing formulas,
- * but which share the same PhisVol defined above.
+ * Then it creates two SerialTrasnformers with two different placing formulas,
+ * but which share the same PhysVol defined above.
  *
  * It is meant to how how to share GeoModel nodes to reduce the memory footprint
  * and to test the GeoModel I/O packages and methods.
diff --git a/GeoModelExamples/SharedNodes/shared_serialtransformers_2.cpp b/GeoModelExamples/SharedNodes/shared_serialtransformers_2.cpp
index 1f0ecc358860d092fc7507006f8f2fa610245945..a79c29d92b8c46fcdfa0ae9c6fce467095c8d8b1 100644
--- a/GeoModelExamples/SharedNodes/shared_serialtransformers_2.cpp
+++ b/GeoModelExamples/SharedNodes/shared_serialtransformers_2.cpp
@@ -4,7 +4,9 @@
  * This example tests shared GeoSerialTransformer nodes.
  *
  * In particular, it tests three serialtransformers that share a single PhysVol
- * volume and a single Function.
+ * volume and:
+ * - two of them share the same placing formula
+ * - one of them has its own placing formula
  *
  *  Author:     Riccardo Maria BIANCHI @ CERN
  *  Created on: Feb, 2023
diff --git a/GeoModelExamples/SharedNodes/shared_serialtransformers_3.cpp b/GeoModelExamples/SharedNodes/shared_serialtransformers_3.cpp
index e955bdfa4deed31f5486eb35470153fa68aaa5b3..598d0026d028fe3a4dd0eb3180a50138fd3c1922 100644
--- a/GeoModelExamples/SharedNodes/shared_serialtransformers_3.cpp
+++ b/GeoModelExamples/SharedNodes/shared_serialtransformers_3.cpp
@@ -4,7 +4,12 @@
  * This example tests shared GeoSerialTransformer nodes.
  *
  * In particular, it tests three serialtransformers that share a single PhysVol
- * volume and a single Function.
+ * volume and:
+ * - two of them share the same placing formula
+ * - one of them has its own placing formula
+ * This test also adds complexity by adding instances of IdentifierTag and SerialIdentifier nodes,
+ * and uses the PhysVol used by the SerialTrasnformers by placing it
+ * in the world with a Transform and an Indentifier.
  *
  *  Author:     Riccardo Maria BIANCHI @ CERN
  *  Created on: Feb, 2023