diff --git a/examples/_update_needed/filter/filter.ecf b/examples/_update_needed/filter/filter.ecf
index 5cba3aa5..8fc170e0 100644
--- a/examples/_update_needed/filter/filter.ecf
+++ b/examples/_update_needed/filter/filter.ecf
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="ISO-8859-1"?>
 <system xmlns="http://www.eiffel.com/developers/xml/configuration-1-15-0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.eiffel.com/developers/xml/configuration-1-15-0 http://www.eiffel.com/developers/xml/configuration-1-15-0.xsd" name="filter" uuid="52FF4B77-0614-4D8B-9B96-C07EC852793E">
-	<target name="common">
+	<target name="common" abstract="true">
 		<file_rule>
 			<exclude>/EIFGENs$</exclude>
 			<exclude>/\.git$</exclude>
diff --git a/examples/obsolete/v0/filter/filter-safe.ecf b/examples/obsolete/v0/filter/filter-safe.ecf
index 8551340b..5e872262 100644
--- a/examples/obsolete/v0/filter/filter-safe.ecf
+++ b/examples/obsolete/v0/filter/filter-safe.ecf
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="ISO-8859-1"?>
 <system xmlns="http://www.eiffel.com/developers/xml/configuration-1-15-0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.eiffel.com/developers/xml/configuration-1-15-0 http://www.eiffel.com/developers/xml/configuration-1-15-0.xsd" name="filter" uuid="52FF4B77-0614-4D8B-9B96-C07EC852793E">
-	<target name="common">
+	<target name="common" abstract="true">
 		<file_rule>
 			<exclude>/EIFGENs$</exclude>
 			<exclude>/\.git$</exclude>
diff --git a/examples/obsolete/v0/restbucksCRUD/restbucks-safe.ecf b/examples/obsolete/v0/restbucksCRUD/restbucks-safe.ecf
index 5ca22986..a661a6be 100644
--- a/examples/obsolete/v0/restbucksCRUD/restbucks-safe.ecf
+++ b/examples/obsolete/v0/restbucksCRUD/restbucks-safe.ecf
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="ISO-8859-1"?>
 <system xmlns="http://www.eiffel.com/developers/xml/configuration-1-15-0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.eiffel.com/developers/xml/configuration-1-15-0 http://www.eiffel.com/developers/xml/configuration-1-15-0.xsd" name="restbucks" uuid="2773FEAA-448F-410E-BEDE-9298C4749066">
-	<target name="restbucks_common">
+	<target name="restbucks_common" abstract="true">
 		<file_rule>
 			<exclude>/EIFGENs$</exclude>
 			<exclude>/\.git$</exclude>
diff --git a/examples/rest/restbucks_CRUD/restbucks.ecf b/examples/rest/restbucks_CRUD/restbucks.ecf
index 079ba852..a4a5b870 100644
--- a/examples/rest/restbucks_CRUD/restbucks.ecf
+++ b/examples/rest/restbucks_CRUD/restbucks.ecf
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="ISO-8859-1"?>
 <system xmlns="http://www.eiffel.com/developers/xml/configuration-1-15-0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.eiffel.com/developers/xml/configuration-1-15-0 http://www.eiffel.com/developers/xml/configuration-1-15-0.xsd" name="restbucks" uuid="2773FEAA-448F-410E-BEDE-9298C4749066">
-	<target name="restbucks_common">
+	<target name="restbucks_common" abstract="true">
 		<file_rule>
 			<exclude>/EIFGENs$</exclude>
 			<exclude>/\.git$</exclude>
diff --git a/examples/upload_image/upload_image.ecf b/examples/upload_image/upload_image.ecf
index cd20896b..322ba3ce 100644
--- a/examples/upload_image/upload_image.ecf
+++ b/examples/upload_image/upload_image.ecf
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="ISO-8859-1"?>
 <system xmlns="http://www.eiffel.com/developers/xml/configuration-1-15-0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.eiffel.com/developers/xml/configuration-1-15-0 http://www.eiffel.com/developers/xml/configuration-1-15-0.xsd" name="upload_image" uuid="F2400BE8-D8EB-48EB-B4E4-5D4377062A7F">
-	<target name="upload_image_common">
+	<target name="upload_image_common" abstract="true">
 		<file_rule>
 			<exclude>/EIFGENs$</exclude>
 			<exclude>/\.git$</exclude>
diff --git a/library/network/websocket/client/example/ws_client/ws_client-safe.ecf b/library/network/websocket/client/example/ws_client/ws_client-safe.ecf
index 7079f81c..d46065be 100644
--- a/library/network/websocket/client/example/ws_client/ws_client-safe.ecf
+++ b/library/network/websocket/client/example/ws_client/ws_client-safe.ecf
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="ISO-8859-1"?>
 <system xmlns="http://www.eiffel.com/developers/xml/configuration-1-15-0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.eiffel.com/developers/xml/configuration-1-15-0 http://www.eiffel.com/developers/xml/configuration-1-15-0.xsd" name="ws_client" uuid="AF6EDC56-D7B4-4E1F-A62B-40EBED3D93DF">
-	<target name="common">
+	<target name="common" abstract="true">
 		<file_rule>
 			<exclude>/.git$</exclude>
 			<exclude>/.svn$</exclude>
diff --git a/library/network/websocket/server/example/echo_websocket_server/echo_websocket_server-safe.ecf b/library/network/websocket/server/example/echo_websocket_server/echo_websocket_server-safe.ecf
index 96cfc79d..0567d72c 100644
--- a/library/network/websocket/server/example/echo_websocket_server/echo_websocket_server-safe.ecf
+++ b/library/network/websocket/server/example/echo_websocket_server/echo_websocket_server-safe.ecf
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="ISO-8859-1"?>
 <system xmlns="http://www.eiffel.com/developers/xml/configuration-1-15-0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.eiffel.com/developers/xml/configuration-1-15-0 http://www.eiffel.com/developers/xml/configuration-1-15-0.xsd" name="echo_websocket_server" uuid="C9B3DA5F-DF0D-4C0F-924A-130B5C1E6604">
-	<target name="common">
+	<target name="common" abstract="true">
 		<file_rule>
 			<exclude>/.git$</exclude>
 			<exclude>/.svn$</exclude>