diff --git a/debian/var/models/example.xml b/debian/var/models/example.xml
index 56366a6..96ffacb 100644
--- a/debian/var/models/example.xml
+++ b/debian/var/models/example.xml
@@ -1,18 +1,80 @@
-<?xml version="1.0"?>
+<?xml version="1.0" encoding="UTF-8"?>
+
+<!-- TODO DTD -->
 
 <gem-graph-model version="0.1">
 
+  <!-- Model identity informations -->
   <identity>
     <name>Modèle de test</name>
     <author>Adrien Bourmault</author>
     <author_id>1</author_id>
-    <date>2021-08-21-21h34m44s</date>
+    <date>2021-08-21-21h34m44s</date>   <!-- TODO timestamp ? -->
     <version>1.0</version>
 
   </identity>
 
-  <parameters>
+  <!-- Model parameters -->
+  <parameters id="" date="" author="">
+    <modelization>
+      <max_thread value="0"/>
+      <max_cycles value="13"/>
+
+    </modelization>
+
+    <space>
+      <dimension value="2"/>
+      <size x="" y="" z=""/>
+      <site_multiplicity value="2"/>
+      <boundaries/>                     <!-- TODO -->
+
+    </space>
 
   </parameters>
 
+  <!-- Model objects definition -->
+  <objects>
+    <object id="0" date="" author="">
+      <arrow id="0" x="0" y="0" z="0" site="0" weight="1"/>
+
+    </object>
+
+  </objects>
+
+  <!-- Space description (initial state) -->
+  <space id="" date="" author="">
+    <arrow id="0" x="0" y="0" z="0" site="0" weight="1"/>
+
+  </space>
+
+  <!-- Saved space description (saved states) -->
+  <savestates id="" date="" author="">
+    <space id="" date="">
+      <arrow id="0" x="0" y="0" z="0" site="0" weight="1"/>
+
+    </space>
+
+  </savestates>
+
+  <!-- Model transitions definition (rules) -->
+  <transitions id="" date="" author="">
+    <transition id="" date="" author="" probability="">
+      <if>
+        <arrow id="0" x="0" y="0" z="0" site="0" weight="1"/>
+
+      </if>
+
+      <then>
+        <arrow id="0" x="0" y="0" z="0" site="0" weight="1"/>
+
+      </then>
+
+    </transition>
+
+  </transitions>
+
+  <!-- Non depth-specific tags -->
+  <ref id="" date="">https://www.a-lec.org</ref>
+  <comment id="" date="" author="" lang="">Comment</comment>
+
 </gem-graph-model>