Updates doc for set-callback in widget-common.xsd
diff --git a/dtds/widget-common.xsd b/dtds/widget-common.xsd
index 15add6b..f5be46c 100644
--- a/dtds/widget-common.xsd
+++ b/dtds/widget-common.xsd
@@ -526,6 +526,7 @@
             <xs:element minOccurs="0" ref="auto-parameters-entity"/>

             <xs:element minOccurs="0" maxOccurs="unbounded" ref="parameter" />

             <xs:element minOccurs="0" name="image" type="image" />

+            <xs:element minOccurs="0" ref="set-callback"/>

         </xs:sequence>

         <xs:attribute type="xs:string" name="text" />

         <xs:attribute type="xs:string" name="id">

@@ -613,4 +614,24 @@
             </xs:simpleType>

         </xs:attribute>

     </xs:complexType>

+    <xs:element name="set-callback">

+        <xs:annotation>

+            <xs:documentation>When actions behind a link are terminated, follow the given information

+                to update a screen</xs:documentation>

+        </xs:annotation>

+        <xs:complexType>

+            <xs:sequence>

+                <xs:element minOccurs="0" ref="auto-parameters-service"/>

+                <xs:element minOccurs="0" ref="auto-parameters-entity"/>

+                <xs:element minOccurs="0" maxOccurs="unbounded" ref="parameter"/>

+            </xs:sequence>

+            <xs:attribute name="area-id" type="xs:string">

+                <xs:annotation>

+                    <xs:documentation>Identification of the area to update. If empty, by default the screen engine

+                        auto resolve it on the first parent referent screen present in the widget hierarchy</xs:documentation>

+                </xs:annotation>

+            </xs:attribute>

+            <xs:attribute name="area-target" type="xs:string" use="required" />

+        </xs:complexType>

+    </xs:element>

 </xs:schema>