diff --git a/debian/var/models/XML model example (in progress) b/debian/var/models/XML model example (in progress)
index 92cc323..5921c9a 100644
--- a/debian/var/models/XML model example (in progress)	
+++ b/debian/var/models/XML model example (in progress)	
@@ -29,8 +29,18 @@
         <arrow x="0" y="0" z="0" site="0" weight="0"/>
     </objects>
 
-    <space>aaa</space>
-    <savestates>aaa</savestates>
+    <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-->
+
+    </initial_state>
+
+    <saved_states></saved_states>
     <transitions>aaa</transitions>
     <ref>aaa</ref>
     <quote>aaa</quote>
diff --git a/debian/var/models/XMLSchema example (in progress) b/debian/var/models/XMLSchema example (in progress)
index be0591c..2c2da5b 100644
--- a/debian/var/models/XMLSchema example (in progress)	
+++ b/debian/var/models/XMLSchema example (in progress)	
@@ -12,11 +12,15 @@
 <xs:attribute name="version" type="xs:float"/>
 <xs:attribute name="owner_id" type="xs:integer"/>
 
-<xs:attribute name="x"  type="xs:integer" default="1"/>
-<xs:attribute name="y"  type="xs:integer" default="0"/>
-<xs:attribute name="z"  type="xs:integer" default="0"/>
-<xs:attribute name="site"  type="xs:integer" default="1"/>
-<xs:attribute name="weight"  type="xs:integer" default="0"/>
+<xs:element name="arrow">
+    <xs:complexType>
+        <xs:attribute name="x" type="xs:integer" default="1"/>
+        <xs:attribute name="y" type="xs:integer" default="0"/>
+        <xs:attribute name="z" type="xs:integer" default="0"/>
+        <xs:attribute name="site" type="xs:integer" default="1"/>
+        <xs:attribute name="weight" type="xs:integer" default="0"/>
+    </xs:complexType>
+</xs:element>
 
 <xs:element name="gem-graph-model">
 <xs:complexType>
@@ -106,17 +110,9 @@
 
       <xs:element name="objects">
           <xs:complexType>
-          <xs:sequence>
+          <xs:sequence minOccurs="1" maxOccurs="unbounded">
 
-              <xs:element name="arrow">
-                  <xs:complexType>
-                      <xs:attribute ref="x" use="required"/>
-                      <xs:attribute ref="y" use="required"/>
-                      <xs:attribute ref="z" use="required"/>
-                      <xs:attribute ref="site" use="required"/>
-                      <xs:attribute ref="weight" use="required"/>
-                  </xs:complexType>
-              </xs:element>
+              <xs:element ref="arrow"/>
 
           </xs:sequence>
           <xs:attribute ref="id" use="required"/>
@@ -125,8 +121,20 @@
           </xs:complexType>
       </xs:element>
 
-      <xs:element name="space" type="xs:string"/>
-      <xs:element name="savestates" type="xs:string"/> 
+      <xs:element name="initial_state">
+          <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="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"/>