diff --git a/models/dimers random walk.xml b/models/dimers random walk.xml
index 16439a2..53a3ca8 100644
--- a/models/dimers random walk.xml	
+++ b/models/dimers random walk.xml	
@@ -118,4 +118,3 @@
     </transitions>
 
 </gem-graph-model>
-
diff --git a/schemas/models_0.2.xmls b/schemas/models_0.2.xmls
index 2c8a0a9..ddc3ece 100644
--- a/schemas/models_0.2.xmls
+++ b/schemas/models_0.2.xmls
@@ -207,3 +207,4 @@
 </xs:complexType>
 </xs:element>
 </xs:schema>
+
diff --git a/src/main.py b/src/main.py
index 81db091..f2a95fb 100644
--- a/src/main.py
+++ b/src/main.py
@@ -24,7 +24,6 @@ import gi
 gi.require_version("Gtk", "3.0")
 from gi.repository import Gtk
 
-
 glade_path = "../ui/GLArea.glade"
 
 ## Main window
diff --git a/src/model.py b/src/model.py
new file mode 100644
index 0000000..cabf07c
--- /dev/null
+++ b/src/model.py
@@ -0,0 +1,414 @@
+from lxml import etree
+import datetime as DT
+
+
+## Identity
+
+
+class G_ref:
+    def __init__(self, node):
+        self.node = node
+
+    def get_id(self):
+        return self.node.get("id")
+
+    def set_id(self, id):
+        self.node.attrib["id"] = id
+
+    def get_author(self):
+        return self.node.get("author")
+
+    def set_author(self, author):
+        self.node.attrib["author"] = author
+
+    def get_date(self):
+        return DT.datetime.fromtimestamp(int(self.node.get("date")))
+
+    def set_date(self, date):
+        self.node.attrib["date"] = str(int(date.timestamp()))
+
+    def get_lang(self):
+        return self.node.get("lang")
+
+    def set_lang(self, lang):
+        if(len(lang) > 2):
+            print("lang must be 2 characters")
+            return
+        self.node.attrib["lang"] = lang
+
+    def get_text(self):
+        return self.node.text
+
+    def set_text(self, text):
+        self.node.text = text
+
+
+class Identity:
+    def __init__(self, node):
+        self.node = node
+        for child in node:
+            if(child.tag == "name"):
+                self.__name = child
+            if(child.tag == "owner"):
+                self.__owner = child
+            if(child.tag == "owner_id"):
+                self.__owner_id = child
+            if(child.tag == "date"):
+                self.__date = child
+            if(child.tag == "version"):
+                self.__version = child
+            if(child.tag == "g_ref"):
+                self.__g_ref = child
+
+    def get_g_ref(self):
+        return G_ref(self.__g_ref)
+
+    def get_name(self):
+        return self.__name.text
+
+    def get_owner(self):
+        return self.__owner.text
+
+    def get_owner_id(self):
+        return self.__owner_id.text
+
+    def get_date(self):
+        return DT.datetime.fromtimestamp(int(self.__date.text))
+
+    def get_version(self):
+        return self.__version.text
+
+    def set_name(self, text):
+        self.__name.text = text
+
+    def set_owner(self, text):
+        self.__owner.text = text
+
+    def set_owner_id(self, text):
+        self.__owner_id.text = text
+
+    def set_date(self, date):
+        self.__date.text = str(int(date.timestamp()))
+
+    def set_version(self, text):
+        self.__version.text = text
+
+## Parameters
+
+
+class Simulation:
+
+    def __init__(self, node):
+        self.node = node
+        for child in node:
+            if(child.tag == "max_thread"):
+                self.__max_thread = child
+            if(child.tag == "max_cycles"):
+                self.__max_cycles = child
+
+    def get_max_thread(self):
+        return int(self.__max_thread.text)
+
+    def set_max_thread(self, value):
+        if(not isinstance(value, int)):
+            print("max_thread must be an int")
+            return
+        self.__max_thread.text = str(value)
+
+    def get_max_cycles(self):
+        return int(self.__max_cycles.text)
+
+    def set_max_cycles(self, value):
+        if(not isinstance(value, int)):
+            print("max_cycles must be an int")
+            return
+        self.__max_cycles.text = str(value)
+
+
+class Spaceparam:
+    def __init__(self, node):
+        self.node = node
+        for child in node:
+            if(child.tag == "dimension"):
+                self.__dimension = Dimension(child)
+            if(child.tag == "site_multiplicity"):
+                self.__site_multiplicity = child
+
+    def get_site_multiplicity(self):
+        return self.__site_multiplicity.text
+
+    def set_site_multiplicity(self, value):
+        self.__site_multiplicity.text = str(value)
+
+    def get_dimension(self):
+        return self.__dimension
+
+
+class Axis:
+    def __init__(self, node):
+        self.node = node
+
+    def get_name(self):
+        return self.node.attrib["name"]
+
+    def get_size(self):
+        return int(self.node.attrib["size"])
+
+
+class Dimension:
+    __axis = []
+
+    def __init__(self, node):
+        self.node = node
+        for child in node:
+            if(child.tag == "axis"):
+                self.__axis.append(Axis(child))
+
+    def get_axis(self, i):
+        return self.__axis[i]
+
+
+class Parameters:
+
+    def __init__(self, node):
+        self.node = node
+        for child in node:
+            if(child.tag == "simulation"):
+                self.simulation = Simulation(child)
+            if(child.tag == "space-param"):
+                self.spaceparam = Spaceparam(child)
+
+    def get_id(self):
+        return self.node.attrib["id"]
+
+    def set_id(self, text):
+        self.node.attrib["id"] = text
+
+    def get_author(self):
+        return self.node.attrib["author"]
+
+    def get_date(self):
+        return self.node.attrib["date"]
+
+    def set_author(self, text):
+        self.node.attrib["author"] = text
+
+    def set_date(self, text):
+        self.node.attrib["date"] = text
+
+## Objects
+
+
+class Object:
+
+    __arrows = []
+
+    def __init__(self, node):
+        self.node = node
+        for child in node:
+            if(child.tag == "arrow"):
+                self.__arrows.append(Arrow(child))
+
+    def get_arrow(self, i):
+        return self.__arrows[i]
+
+
+class Objects:
+    __objects = []
+
+    def __init__(self, node):
+        self.node = node
+        for child in node:
+            if(child.tag == "object"):
+                self.__objects.append(Object(child))
+
+    def get_object(self, i):
+        return self.__objects[i]
+
+## Savestates
+
+
+class Space:
+    __arrows = []
+
+    def __init__(self, node):
+        self.node = node
+        for child in node:
+            if(child.tag == "arrow"):
+                self.__arrows.append(Arrow(child))
+
+    def get_arrow(self, i):
+        return self.__arrows[i]
+
+
+class Savestates:
+    __space = []
+
+    def __init__(self, node):
+        self.node = node
+        for child in node:
+            if(child.tag == "space"):
+                self.__space.append(Space(child))
+
+    def get_space(self, i):
+        return self.__space[i]
+
+## Conditions
+
+
+class Condition:
+    def __init__(self, node):
+        self.node = node
+
+    def get_coord(self, axis):
+        return int(self.node.get(axis))
+
+    def set_coord(self, axis, value):
+        self.node.attrib[axis] = str(value)
+
+    def get_site(self):
+        return int(self.node.get("site"))
+
+    def set_site(self, site):
+        self.node.attrib["site"] = str(site)
+
+    def get_weight(self):
+        return int(self.node.get("weight"))
+
+    def set_weight(self, weight):
+        self.node.attrib["weight"] = str(weight)
+
+    def get_node_id(self):
+        return int(self.node.get("node_id"))
+
+    def set_node_id(self, node_id):
+        self.node.attrib["node_id"] = str(node_id)
+
+    def get_parent(self):
+        return int(self.node.get("parent"))
+
+    def set_parent(self, parent):
+        self.node.attrib["parent"] = str(parent)
+
+
+class Conditions:
+    __conditions = []
+
+    def __init__(self, node):
+        self.node = node
+        for child in node:
+            if(child.tag == "condition"):
+                self.__conditions.append(Condition(child))
+
+
+class Transition:
+    __arrows = []
+
+    def __init__(self, node):
+        self.node = node
+        for child in node:
+            if(child.tag == "arrow"):
+                self.__arrows.append(Arrow(child))
+
+    def get_arrow(self, i):
+        return self.__arrows[i]
+
+
+class Transitions:
+    __transitions = []
+
+    def __init__(self, node):
+        self.node = node
+        for child in node:
+            if(child.tag == "transition"):
+                self.__transition.append(Transition(child))
+
+    def get_transition(self, i):
+        return self.__transitions[i]
+
+    def get_transition_array(self, i):
+        return self.__transitions
+
+## Model
+
+
+class Arrow:
+
+    def __init__(self, node):
+        self.node = node
+
+    def get_coord(self, axis):
+        return int(self.node.get(axis))
+
+    def set_coord(self, axis, value):
+        self.node.attrib[axis] = str(value)
+
+    def get_site(self):
+        return int(self.node.get("site"))
+
+    def set_site(self, site):
+        self.node.attrib["site"] = str(site)
+
+    def get_weight(self):
+        return int(self.node.get("weight"))
+
+    def set_weight(self, weight):
+        self.node.attrib["weight"] = str(weight)
+
+
+class Model:
+
+    def __init__(self, modelpath, schemapath):
+        schema = etree.parse(schemapath)
+        xmlschema = etree.XMLSchema(schema)
+        self.parser = etree.XMLParser(
+            remove_blank_text=True,
+            remove_pis=True,
+            compact=True,
+            schema=xmlschema)
+        self.tree = etree.parse(modelpath, self.parser)
+        self.node = self.tree.getroot()
+        self.create_all_leaves()
+
+    def create_all_leaves(self):
+        for child in self.node:
+            if(isinstance(child.tag, str)):
+                if(child.tag == "identity"):
+                    self.__identity = child
+                if(child.tag == "parameters"):
+                    self.__parameters = child
+                if(child.tag == "objects"):
+                    self.__objects = child
+                if(child.tag == "savestates"):
+                    self.__savestates = child
+                if(child.tag == "conditions"):
+                    self.__conditions = child
+                if(child.tag == "transition"):
+                    self.__transitions = child
+
+    def get_identity(self):
+        return Identity(self.__identity)
+
+    def get_parameters(self):
+        return Parameters(self.__parameters)
+
+    def get_objects(self):
+        return Objects(self.__objects)
+
+    def get_savestates(self):
+        return Savestates(self.__savestates)
+
+    def get_conditions(self):
+        return Conditions(self.__conditions)
+
+    def get_transitions(self):
+        return Transitions(self.__transitions)
+
+    def saveas(self, name):
+        self.tree.write("../models/" + name + ".xml", encoding="utf-8")
+
+
+modelPath = "../models/dimers random walk.xml"
+schemaPath = "../schemas/models_0.2.xmls"
+
+testmodel = Model(modelPath, schemaPath)