diff --git a/debian/var/models/XML model example (in progress) b/debian/var/models/XML model example (in progress)
index 5921c9a..7e614e1 100644
--- a/debian/var/models/XML model example (in progress)	
+++ b/debian/var/models/XML model example (in progress)	
@@ -25,23 +25,48 @@
 
     </parameters>
 
-    <objects id="dimer" date="1629830000" author="Jean Sirmai">
-        <arrow x="0" y="0" z="0" site="0" weight="0"/>
+    <objects id="A list of connex states" date="1629830000" author="Jean Sirmai">
+
+        <state id="dimer 1-1" date="1629830000" author="Jean Sirmai">
+            <arrow x="0" y="0" z="0" site="1" weight="1"/>
+            <arrow x="1" y="0" z="0" site="0" weight="1"/>
+        </state>
+
+        <state id="dimer 2-2" date="1629830000" author="Jean Sirmai">
+            <arrow x="0" y="0" z="0" site="1" weight="2"/>
+            <arrow x="1" y="0" z="0" site="0" weight="2"/>
+        </state>
+
+        <state id="dimer 3-3" date="1629830000" author="Jean Sirmai">
+            <arrow x="0" y="0" z="0" site="1" weight="3"/>
+            <arrow x="1" y="0" z="0" site="0" weight="3"/>
+        </state>
+
+        <!-- Just for the fun !  Can you imagine some rules in a next model ? -->
+        <state id="dimer 1-2" date="1629830000" author="Jean Sirmai">
+            <arrow x="0" y="0" z="0" site="1" weight="1"/>
+            <arrow x="1" y="0" z="0" site="0" weight="2"/>
+        </state>
+
     </objects>
 
-    <initial_state id="test" date="1629830000" author="Jean Sirmai">
-    <arrow x="0"  y="0" z="0" site="1" weight="1"/>
-    <arrow x="1"  y="0" z="0" site="0" weight="1"/>
-    <arrow x="10" y="0" z="0" site="1" weight="1"/>
-    <arrow x="11" y="0" z="0" site="0" weight="1"/>
-    <arrow x="20" y="0" z="0" site="1" weight="1"/>
-    <arrow x="21" y="0" z="0" site="0" weight="1"/>
-    <!-- three dimers have been defined-->
+    <state id="initial state" date="1629830000" author="Jean Sirmai">
+    <!-- three dimers of three types (1-1, 2-2, 3-3) are defined in three locations-->
 
-    </initial_state>
+        <arrow x="0"  y="0" z="0" site="1" weight="1"/>
+        <arrow x="1"  y="0" z="0" site="0" weight="1"/>
 
-    <saved_states></saved_states>
-    <transitions>aaa</transitions>
-    <ref>aaa</ref>
-    <quote>aaa</quote>
+        <arrow x="10" y="0" z="0" site="1" weight="2"/>
+        <arrow x="11" y="0" z="0" site="0" weight="2"/>
+
+        <arrow x="20" y="0" z="0" site="1" weight="3"/>
+        <arrow x="21" y="0" z="0" site="0" weight="3"/>
+
+    </state>
+
+    <produced_states id="a computed state" date="00000" author="THE MATRIX (you know it...)">
+    </produced_states>
+    <transitions></transitions>
+    <ref></ref>
+    <quote></quote>
 </gem-graph-model>
diff --git a/debian/var/models/XMLSchema example (in progress) b/debian/var/models/XMLSchema example (in progress)
index 2c2da5b..2d4e83e 100644
--- a/debian/var/models/XMLSchema example (in progress)	
+++ b/debian/var/models/XMLSchema example (in progress)	
@@ -3,6 +3,7 @@
 
 <!-- https://www.w3schools.com/xml/el_attribute.asp  -->
 <!-- use="required" is NOT allowed in attributes declarations-->
+<!-- Attribute 'name' Cannot Appear In Element 'element'.-->
 
 <xs:attribute name="id" type="xs:string"/>
 <xs:attribute name="date" type="xs:integer"/>  <!--TODO  type ? -->
@@ -22,6 +23,17 @@
     </xs:complexType>
 </xs:element>
 
+<xs:element name="state"> <!-- A connex state is an object. -->
+    <xs:complexType>
+    <xs:sequence minOccurs="1" maxOccurs="unbounded">
+        <xs:element ref="arrow"/>
+    </xs:sequence>
+    <xs:attribute ref="id" use="required"/>
+    <xs:attribute ref="date" use="required"/>
+    <xs:attribute ref="author" use="required"/>
+    </xs:complexType>
+</xs:element>
+
 <xs:element name="gem-graph-model">
 <xs:complexType>
 <xs:sequence>
@@ -111,9 +123,7 @@
       <xs:element name="objects">
           <xs:complexType>
           <xs:sequence minOccurs="1" maxOccurs="unbounded">
-
-              <xs:element ref="arrow"/>
-
+              <xs:element ref="state"/>  <!--An object is a connex state -->
           </xs:sequence>
           <xs:attribute ref="id" use="required"/>
           <xs:attribute ref="date" use="required"/>
@@ -121,12 +131,14 @@
           </xs:complexType>
       </xs:element>
 
-      <xs:element name="initial_state">
+      <!--An initial state is made of at least one object -->
+      <xs:element ref="state"/>
+
+      <!--An produced state is made of at least one object -->
+      <xs:element name="produced_states">
           <xs:complexType>
-          <xs:sequence minOccurs="1" maxOccurs="unbounded">
-
-              <xs:element ref="arrow"/>
-
+          <xs:sequence minOccurs="0" maxOccurs="unbounded">
+              <xs:element ref="state"/>
           </xs:sequence>
           <xs:attribute ref="id" use="required"/>
           <xs:attribute ref="date" use="required"/>
@@ -134,7 +146,6 @@
           </xs:complexType>
       </xs:element>
 
-      <xs:element name="saved_states" type="xs:string"/>
       <xs:element name="transitions" type="xs:string"/> 
       <xs:element name="ref" type="xs:string"/> 
       <xs:element name="quote" type="xs:string"/>