diff --git a/classdiagram.graphml b/classdiagram.graphml
index 430423b..7787c97 100644
--- a/classdiagram.graphml
+++ b/classdiagram.graphml
@@ -84,7 +84,6 @@
     </node>
     <node id="n3">
       <data key="d4"/>
-      <data key="d5"/>
       <data key="d6">
         <y:UMLClassNode>
           <y:Geometry height="140.0" width="321.0" x="590.25" y="291.5"/>
@@ -110,7 +109,6 @@
     </node>
     <node id="n4">
       <data key="d4"/>
-      <data key="d5"/>
       <data key="d6">
         <y:UMLClassNode>
           <y:Geometry height="28.0" width="178.0" x="791.5" y="495.5"/>
@@ -132,7 +130,6 @@
     </node>
     <node id="n5">
       <data key="d4"/>
-      <data key="d5"/>
       <data key="d6">
         <y:UMLClassNode>
           <y:Geometry height="28.0" width="178.0" x="532.0" y="495.5"/>
@@ -154,7 +151,6 @@
     </node>
     <node id="n6">
       <data key="d4"/>
-      <data key="d5"/>
       <data key="d6">
         <y:UMLClassNode>
           <y:Geometry height="28.0" width="178.0" x="661.75" y="553.5"/>
@@ -176,7 +172,6 @@
     </node>
     <node id="n7">
       <data key="d4"/>
-      <data key="d5"/>
       <data key="d6">
         <y:UMLClassNode>
           <y:Geometry height="59.0" width="231.0" x="285.0" y="523.5"/>
@@ -198,13 +193,12 @@
     </node>
     <node id="n8">
       <data key="d4"/>
-      <data key="d5"/>
       <data key="d6">
         <y:UMLClassNode>
-          <y:Geometry height="28.0" width="100.0" x="350.5" y="462.5"/>
+          <y:Geometry height="78.14549968739891" width="230.99999999999994" x="285.0" y="412.3545003126011"/>
           <y:Fill color="#FFCC00" transparent="false"/>
           <y:BorderStyle color="#000000" type="line" width="1.0"/>
-          <y:NodeLabel alignment="center" autoSizePolicy="content" fontFamily="Dialog" fontSize="13" fontStyle="bold" hasBackgroundColor="false" hasLineColor="false" height="19.1328125" modelName="custom" textColor="#000000" visible="true" width="89.1474609375" x="5.42626953125" y="3.0">StackModel<y:LabelModel>
+          <y:NodeLabel alignment="center" autoSizePolicy="content" fontFamily="Dialog" fontSize="13" fontStyle="bold" hasBackgroundColor="false" hasLineColor="false" height="19.1328125" modelName="custom" textColor="#000000" visible="true" width="89.1474609375" x="70.92626953124997" y="3.0">StackModel<y:LabelModel>
               <y:SmartNodeLabelModel distance="4.0"/>
             </y:LabelModel>
             <y:ModelParameter>
@@ -212,7 +206,7 @@
             </y:ModelParameter>
           </y:NodeLabel>
           <y:UML clipContent="true" constraint="" omitDetails="false" stereotype="" use3DEffect="true">
-            <y:AttributeLabel/>
+            <y:AttributeLabel>- stack : list&lt;ProtocolModel&gt;</y:AttributeLabel>
             <y:MethodLabel/>
           </y:UML>
         </y:UMLClassNode>
@@ -220,7 +214,6 @@
     </node>
     <node id="n9">
       <data key="d4"/>
-      <data key="d5"/>
       <data key="d6">
         <y:UMLClassNode>
           <y:Geometry height="169.0" width="155.0" x="323.0" y="612.5"/>
@@ -246,7 +239,6 @@
     </node>
     <node id="n10">
       <data key="d4"/>
-      <data key="d5"/>
       <data key="d6">
         <y:UMLClassNode>
           <y:Geometry height="28.0" width="178.0" x="311.5" y="344.5"/>
@@ -268,13 +260,12 @@
     </node>
     <node id="n11">
       <data key="d4"/>
-      <data key="d5"/>
       <data key="d6">
         <y:UMLClassNode>
-          <y:Geometry height="95.0" width="293.0" x="-528.25" y="322.5"/>
+          <y:Geometry height="95.0" width="293.0" x="-82.25" y="311.0"/>
           <y:Fill color="#FFCC00" transparent="false"/>
           <y:BorderStyle color="#000000" type="line" width="1.0"/>
-          <y:NodeLabel alignment="center" autoSizePolicy="content" fontFamily="Dialog" fontSize="13" fontStyle="bold" hasBackgroundColor="false" hasLineColor="false" height="19.1328125" modelName="custom" textColor="#000000" visible="true" width="124.1484375" x="84.42578125" y="3.0">BinaryConverter<y:LabelModel>
+          <y:NodeLabel alignment="center" autoSizePolicy="content" fontFamily="Dialog" fontSize="13" fontStyle="bold" hasBackgroundColor="false" hasLineColor="false" height="19.1328125" modelName="custom" textColor="#000000" visible="true" width="110.16455078125" x="91.417724609375" y="3.0">StackCompiler<y:LabelModel>
               <y:SmartNodeLabelModel distance="4.0"/>
             </y:LabelModel>
             <y:ModelParameter>
@@ -283,102 +274,13 @@
           </y:NodeLabel>
           <y:UML clipContent="true" constraint="" omitDetails="false" stereotype="" use3DEffect="true">
             <y:AttributeLabel/>
-            <y:MethodLabel>+ convert(model : StackModel) : byte[]
-+ convert(pmodel : ProtocolModel) : byte[]</y:MethodLabel>
-          </y:UML>
-        </y:UMLClassNode>
-      </data>
-    </node>
-    <node id="n12">
-      <data key="d4"/>
-      <data key="d5"/>
-      <data key="d6">
-        <y:UMLClassNode>
-          <y:Geometry height="59.0" width="183.0" x="-473.25" y="501.5"/>
-          <y:Fill color="#FFCC00" transparent="false"/>
-          <y:BorderStyle color="#000000" type="line" width="1.0"/>
-          <y:NodeLabel alignment="center" autoSizePolicy="content" fontFamily="Dialog" fontSize="13" fontStyle="bold" hasBackgroundColor="false" hasLineColor="false" height="19.1328125" modelName="custom" textColor="#000000" visible="true" width="156.83251953125" x="13.083740234375" y="3.0">BinaryProtocolModel<y:LabelModel>
-              <y:SmartNodeLabelModel distance="4.0"/>
-            </y:LabelModel>
-            <y:ModelParameter>
-              <y:SmartNodeLabelModelParameter labelRatioX="0.0" labelRatioY="0.0" nodeRatioX="0.0" nodeRatioY="-0.03703090122767855" offsetX="0.0" offsetY="0.0" upX="0.0" upY="-1.0"/>
-            </y:ModelParameter>
-          </y:NodeLabel>
-          <y:UML clipContent="true" constraint="" omitDetails="false" stereotype="" use3DEffect="true">
-            <y:AttributeLabel/>
-            <y:MethodLabel>+ refresh()</y:MethodLabel>
-          </y:UML>
-        </y:UMLClassNode>
-      </data>
-    </node>
-    <node id="n13">
-      <data key="d4"/>
-      <data key="d5"/>
-      <data key="d6">
-        <y:UMLClassNode>
-          <y:Geometry height="28.0" width="178.0" x="-14.25" y="523.5"/>
-          <y:Fill color="#FFCC00" transparent="false"/>
-          <y:BorderStyle color="#000000" type="line" width="1.0"/>
-          <y:NodeLabel alignment="center" autoSizePolicy="content" fontFamily="Dialog" fontSize="13" fontStyle="bold" hasBackgroundColor="false" hasLineColor="false" height="19.1328125" modelName="custom" textColor="#000000" visible="true" width="144.10546875" x="16.947265625" y="3.0">ProtocolDataModel<y:LabelModel>
-              <y:SmartNodeLabelModel distance="4.0"/>
-            </y:LabelModel>
-            <y:ModelParameter>
-              <y:SmartNodeLabelModelParameter labelRatioX="0.0" labelRatioY="0.0" nodeRatioX="0.0" nodeRatioY="-0.03703090122767855" offsetX="0.0" offsetY="0.0" upX="0.0" upY="-1.0"/>
-            </y:ModelParameter>
-          </y:NodeLabel>
-          <y:UML clipContent="true" constraint="" omitDetails="false" stereotype="" use3DEffect="true">
-            <y:AttributeLabel/>
-            <y:MethodLabel/>
-          </y:UML>
-        </y:UMLClassNode>
-      </data>
-    </node>
-    <node id="n14">
-      <data key="d4"/>
-      <data key="d5"/>
-      <data key="d6">
-        <y:UMLClassNode>
-          <y:Geometry height="28.0" width="171.0" x="-10.75" y="612.5"/>
-          <y:Fill color="#FFCC00" transparent="false"/>
-          <y:BorderStyle color="#000000" type="line" width="1.0"/>
-          <y:NodeLabel alignment="center" autoSizePolicy="content" fontFamily="Dialog" fontSize="13" fontStyle="bold" hasBackgroundColor="false" hasLineColor="false" height="19.1328125" modelName="custom" textColor="#000000" visible="true" width="142.98193359375" x="14.009033203125" y="3.0">ElementDataModel<y:LabelModel>
-              <y:SmartNodeLabelModel distance="4.0"/>
-            </y:LabelModel>
-            <y:ModelParameter>
-              <y:SmartNodeLabelModelParameter labelRatioX="0.0" labelRatioY="0.0" nodeRatioX="0.0" nodeRatioY="-0.03703090122767855" offsetX="0.0" offsetY="0.0" upX="0.0" upY="-1.0"/>
-            </y:ModelParameter>
-          </y:NodeLabel>
-          <y:UML clipContent="true" constraint="" omitDetails="false" stereotype="" use3DEffect="true">
-            <y:AttributeLabel/>
-            <y:MethodLabel/>
-          </y:UML>
-        </y:UMLClassNode>
-      </data>
-    </node>
-    <node id="n15">
-      <data key="d4"/>
-      <data key="d5"/>
-      <data key="d6">
-        <y:UMLClassNode>
-          <y:Geometry height="28.0" width="135.5" x="7.0" y="462.5"/>
-          <y:Fill color="#FFCC00" transparent="false"/>
-          <y:BorderStyle color="#000000" type="line" width="1.0"/>
-          <y:NodeLabel alignment="center" autoSizePolicy="content" fontFamily="Dialog" fontSize="13" fontStyle="bold" hasBackgroundColor="false" hasLineColor="false" height="19.1328125" modelName="custom" textColor="#000000" visible="true" width="123.69775390625" x="5.901123046875" y="3.0">StackDataModel<y:LabelModel>
-              <y:SmartNodeLabelModel distance="4.0"/>
-            </y:LabelModel>
-            <y:ModelParameter>
-              <y:SmartNodeLabelModelParameter labelRatioX="0.0" labelRatioY="0.0" nodeRatioX="0.0" nodeRatioY="-0.03703090122767855" offsetX="0.0" offsetY="0.0" upX="0.0" upY="-1.0"/>
-            </y:ModelParameter>
-          </y:NodeLabel>
-          <y:UML clipContent="true" constraint="" omitDetails="false" stereotype="" use3DEffect="true">
-            <y:AttributeLabel/>
-            <y:MethodLabel/>
+            <y:MethodLabel>+ compile(model : StackModel) : byte[]
++ compile(pmodel : ProtocolModel) : byte[]</y:MethodLabel>
           </y:UML>
         </y:UMLClassNode>
       </data>
     </node>
     <edge id="e0" source="n4" target="n3">
-      <data key="d9"/>
       <data key="d10">
         <y:PolyLineEdge>
           <y:Path sx="0.0" sy="0.0" tx="0.0" ty="0.0"/>
@@ -389,7 +291,6 @@
       </data>
     </edge>
     <edge id="e1" source="n6" target="n3">
-      <data key="d9"/>
       <data key="d10">
         <y:PolyLineEdge>
           <y:Path sx="0.0" sy="0.0" tx="0.0" ty="0.0"/>
@@ -400,7 +301,6 @@
       </data>
     </edge>
     <edge id="e2" source="n5" target="n3">
-      <data key="d9"/>
       <data key="d10">
         <y:PolyLineEdge>
           <y:Path sx="0.0" sy="0.0" tx="0.0" ty="0.0"/>
@@ -411,7 +311,6 @@
       </data>
     </edge>
     <edge id="e3" source="n8" target="n7">
-      <data key="d9"/>
       <data key="d10">
         <y:PolyLineEdge>
           <y:Path sx="0.0" sy="0.0" tx="0.0" ty="0.0"/>
@@ -422,7 +321,6 @@
       </data>
     </edge>
     <edge id="e4" source="n7" target="n9">
-      <data key="d9"/>
       <data key="d10">
         <y:PolyLineEdge>
           <y:Path sx="0.0" sy="0.0" tx="0.0" ty="0.0"/>
@@ -433,7 +331,6 @@
       </data>
     </edge>
     <edge id="e5" source="n10" target="n3">
-      <data key="d9"/>
       <data key="d10">
         <y:PolyLineEdge>
           <y:Path sx="0.0" sy="0.0" tx="0.0" ty="0.0"/>
@@ -444,7 +341,6 @@
       </data>
     </edge>
     <edge id="e6" source="n10" target="n8">
-      <data key="d9"/>
       <data key="d10">
         <y:PolyLineEdge>
           <y:Path sx="0.0" sy="0.0" tx="0.0" ty="0.0"/>
@@ -454,29 +350,7 @@
         </y:PolyLineEdge>
       </data>
     </edge>
-    <edge id="e7" source="n7" target="n13">
-      <data key="d9"/>
-      <data key="d10">
-        <y:PolyLineEdge>
-          <y:Path sx="0.0" sy="0.0" tx="0.0" ty="0.0"/>
-          <y:LineStyle color="#000000" type="line" width="1.0"/>
-          <y:Arrows source="none" target="none"/>
-          <y:BendStyle smoothed="false"/>
-        </y:PolyLineEdge>
-      </data>
-    </edge>
-    <edge id="e8" source="n9" target="n14">
-      <data key="d9"/>
-      <data key="d10">
-        <y:PolyLineEdge>
-          <y:Path sx="0.0" sy="0.0" tx="0.0" ty="0.0"/>
-          <y:LineStyle color="#000000" type="line" width="1.0"/>
-          <y:Arrows source="none" target="none"/>
-          <y:BendStyle smoothed="false"/>
-        </y:PolyLineEdge>
-      </data>
-    </edge>
-    <edge id="e9" source="n8" target="n15">
+    <edge id="e7" source="n10" target="n11">
       <data key="d9"/>
       <data key="d10">
         <y:PolyLineEdge>