diff --git a/models/dimers random walk.xml b/models/dimers random walk.xml
index 817dd1b..fc65c86 100644
--- a/models/dimers random walk.xml	
+++ b/models/dimers random walk.xml	
@@ -2,9 +2,9 @@
 <gem-graph-model version="0.2.1">
 
     <identity>
-       <name>Modèle de test</name>
+       <name>Chrysalide</name>
 
-       <owner>Léontine Patinette</owner>
+       <owner>Léontine qui patine</owner>
 
        <owner_id>2</owner_id>
 
@@ -12,10 +12,10 @@
 
        <version>1.0</version>
 
-       <g_ref id="Cause" date="1630000000" author="toujours" lang="en">Ref</g_ref>
+       <g_ref id="mééée..." date="1630000000" author="Léontine" lang="en">C'est qui ?'</g_ref>
     </identity>
 
-    <parameters id="texte" date="0" author="Léontine Trottine.">
+    <parameters id="texte" date="0" author="Léontine qui trottine.">
         <simulation>
             <max_thread>0</max_thread>
             <max_cycles>9</max_cycles>
@@ -54,7 +54,7 @@
     <!-- Saved space description (initial space is sequence 0) -->
 
     <savedstates id="texte" date="1630000000" author="Qui courrait dans l'herbe'">
-        <state id="initial" date="1630000000" author="Une souris verte">
+        <space id="initial" date="1630000000" author="Une souris verte">
             <arrow site="1" weight="1" x="0"/>
             <arrow site="2" weight="1" x="1"/>
             <arrow site="1" weight="1" x="10"/>
@@ -65,7 +65,7 @@
           <!-- Three dimers 1-1 are drawn in the global space
                at locations (0,1) (10,11) and (20,21) -->
 
-      </state>
+      </space>
 
     </savedstates>
 
diff --git a/schemas/models_0.2.1.xmls b/schemas/models_0.2.1.xmls
index 3a623f5..a7b3ef5 100644
--- a/schemas/models_0.2.1.xmls
+++ b/schemas/models_0.2.1.xmls
@@ -10,18 +10,21 @@
 <xs:attribute name="owner" type="xs:string"/>
 <xs:attribute name="owner_id" type="xs:integer"/>
 <xs:attribute name="author" type="xs:string"/>
-<xs:attribute name="version" type="xs:float"/>
+<xs:attribute name="version" type="xs:string"/>
 <xs:attribute name="probability" type="xs:integer"/>
 <xs:attribute name="site" type="xs:integer" default="0"/>
 <xs:attribute name="weight" type="xs:integer" default="0"/>
+
+<!-- As it may be understand as 'time',
+    name "t" should not be used as an axis name :
+    in space phases models, time cannot be an axis -->
+
 <xs:attribute name="u" type="xs:integer"/>
 <xs:attribute name="v" type="xs:integer"/>
 <xs:attribute name="w" type="xs:integer"/>
 <xs:attribute name="x" type="xs:integer"/>
 <xs:attribute name="y" type="xs:integer"/>
 <xs:attribute name="z" type="xs:integer"/>
-<xs:attribute name="t" type="xs:integer"/>
-
 
 <xs:attributeGroup name="id_date_author">
       <xs:attribute ref="id"/>
@@ -50,7 +53,6 @@
         <xs:attribute ref="x" use="optional"/>
         <xs:attribute ref="y" use="optional"/>
         <xs:attribute ref="z" use="optional"/>
-        <xs:attribute ref="t" use="optional"/>
     </xs:complexType>
 </xs:element>
 
@@ -64,7 +66,6 @@
         <xs:attribute ref="x" use="optional"/>
         <xs:attribute ref="y" use="optional"/>
         <xs:attribute ref="z" use="optional"/>
-        <xs:attribute ref="t" use="optional"/>
     </xs:complexType>
 </xs:element>
 
@@ -80,11 +81,10 @@
         <xs:attribute ref="x" use="optional"/>
         <xs:attribute ref="y" use="optional"/>
         <xs:attribute ref="z" use="optional"/>
-        <xs:attribute ref="t" use="optional"/>
     </xs:complexType>
 </xs:element>
 
-<xs:element name="state">
+<xs:element name="space">
     <xs:complexType>
     <xs:sequence minOccurs="1" maxOccurs="unbounded">
         <xs:element ref="arrow"/>
@@ -93,7 +93,7 @@
     </xs:complexType>
 </xs:element>
 
-<xs:element name="object" substitutionGroup="state"/>
+<xs:element name="object" substitutionGroup="space"/>
 
 <xs:element name="transition">
     <xs:complexType>
@@ -162,7 +162,7 @@
       <xs:element name="savedstates">
           <xs:complexType>
           <xs:sequence minOccurs="0" maxOccurs="unbounded">
-              <xs:element ref="state"/>
+              <xs:element ref="space"/>
           </xs:sequence>
           <xs:attributeGroup ref="id_date_author"/>
           </xs:complexType>
diff --git a/src/main.py b/src/main.py
index f2a95fb..14dfb9a 100644
--- a/src/main.py
+++ b/src/main.py
@@ -32,4 +32,4 @@ builder = Gtk.Builder()
 builder.add_from_file(glade_path)
 
 win = builder.get_object("Appwindow")
-win.show_all()
+win
diff --git a/src/model.py b/src/model.py
index cabf07c..d2a27d4 100644
--- a/src/model.py
+++ b/src/model.py
@@ -225,7 +225,7 @@ class Objects:
     def get_object(self, i):
         return self.__objects[i]
 
-## Savestates
+## Savedstates
 
 
 class Space:
@@ -241,7 +241,7 @@ class Space:
         return self.__arrows[i]
 
 
-class Savestates:
+class Savedstates:
     __space = []
 
     def __init__(self, node):
@@ -379,8 +379,8 @@ class Model:
                     self.__parameters = child
                 if(child.tag == "objects"):
                     self.__objects = child
-                if(child.tag == "savestates"):
-                    self.__savestates = child
+                if(child.tag == "savedstates"):
+                    self.__savedstates = child
                 if(child.tag == "conditions"):
                     self.__conditions = child
                 if(child.tag == "transition"):
@@ -395,8 +395,8 @@ class Model:
     def get_objects(self):
         return Objects(self.__objects)
 
-    def get_savestates(self):
-        return Savestates(self.__savestates)
+    def get_savedstates(self):
+        return Savedstates(self.__savedstates)
 
     def get_conditions(self):
         return Conditions(self.__conditions)
@@ -409,6 +409,6 @@ class Model:
 
 
 modelPath = "../models/dimers random walk.xml"
-schemaPath = "../schemas/models_0.2.xmls"
+schemaPath = "../schemas/models_0.2.1.xmls"
 
 testmodel = Model(modelPath, schemaPath)