diff --git a/modeling/AVATAR/CoffeeMachine_Avatar.xml b/modeling/AVATAR/CoffeeMachine_Avatar.xml
index 79ae804124930299f12c0e13dab23a3ffbf6a121..54f0dbbee3712a0d005ca60a69782508f8b8b1e1 100644
--- a/modeling/AVATAR/CoffeeMachine_Avatar.xml
+++ b/modeling/AVATAR/CoffeeMachine_Avatar.xml
@@ -1274,7 +1274,7 @@
 
 
 <Modeling type="AVATAR Design" nameTab="AVATAR Design" tabs="Block Diagram$CoffeeButton$TeaButton$CoffeeMachine$Wallet" >
-<AVATARBlockDiagramPanel name="Block Diagram" minX="10" maxX="1400" minY="10" maxY="900" zoom="1.0" >
+<AVATARBlockDiagramPanel name="Block Diagram" minX="6" maxX="896" minY="6" maxY="576" zoom="0.6400000000000001" >
 <MainCode value="void __user_init() {"/>
 <MainCode value="}"/>
 <Optimized value="true" />
@@ -1283,12 +1283,12 @@
 <Ignored value="" />
 
 <CONNECTOR type="5002" id="695" >
-<cdparam x="321" y="567" />
-<sizeparam width="0" height="0" minWidth="0" minHeight="0" maxWidth="1000" maxHeight="2000" minDesiredWidth="0" minDesiredHeight="0" />
+<cdparam x="205" y="362" />
+<sizeparam width="0" height="0" minWidth="0" minHeight="0" maxWidth="640" maxHeight="1280" minDesiredWidth="0" minDesiredHeight="0" />
 <infoparam name="connector from Block1 to Block0" value="" />
 <TGConnectingPoint num="0" id="694" />
-<P1  x="560" y="351" id="773" />
-<P2  x="560" y="377" id="806" />
+<P1  x="357" y="224" id="773" />
+<P2  x="357" y="241" id="806" />
 <AutomaticDrawing  data="true" />
 <extraparam>
 <isd value="in pushCoffeeButton()" />
@@ -1297,12 +1297,12 @@
 </extraparam>
 </CONNECTOR>
 <CONNECTOR type="5002" id="697" >
-<cdparam x="275" y="114" />
-<sizeparam width="0" height="0" minWidth="0" minHeight="0" maxWidth="1000" maxHeight="2000" minDesiredWidth="0" minDesiredHeight="0" />
+<cdparam x="176" y="72" />
+<sizeparam width="0" height="0" minWidth="0" minHeight="0" maxWidth="640" maxHeight="1280" minDesiredWidth="0" minDesiredHeight="0" />
 <infoparam name="connector from Block0 to Block0" value="" />
 <TGConnectingPoint num="0" id="696" />
-<P1  x="306" y="109" id="728" />
-<P2  x="445" y="108" id="802" />
+<P1  x="195" y="69" id="728" />
+<P2  x="284" y="69" id="802" />
 <AutomaticDrawing  data="true" />
 <extraparam>
 <iso value="in getCoin(int nbOfCoins)" />
@@ -1313,12 +1313,12 @@
 </extraparam>
 </CONNECTOR>
 <CONNECTOR type="5002" id="699" >
-<cdparam x="623" y="565" />
-<sizeparam width="0" height="0" minWidth="0" minHeight="0" maxWidth="1000" maxHeight="2000" minDesiredWidth="0" minDesiredHeight="0" />
+<cdparam x="398" y="361" />
+<sizeparam width="0" height="0" minWidth="0" minHeight="0" maxWidth="640" maxHeight="1280" minDesiredWidth="0" minDesiredHeight="0" />
 <infoparam name="connector from Block1 to Block0" value="" />
 <TGConnectingPoint num="0" id="698" />
-<P1  x="790" y="350" id="748" />
-<P2  x="790" y="377" id="807" />
+<P1  x="505" y="223" id="748" />
+<P2  x="505" y="241" id="807" />
 <AutomaticDrawing  data="true" />
 <extraparam>
 <isd value="in pushTeaButton()" />
@@ -1327,12 +1327,12 @@
 </extraparam>
 </CONNECTOR>
 <COMPONENT type="303" id="716" >
-<cdparam x="54" y="426" />
-<sizeparam width="646" height="214" minWidth="80" minHeight="10" maxWidth="2000" maxHeight="2000" minDesiredWidth="0" minDesiredHeight="0" />
+<cdparam x="33" y="272" />
+<sizeparam width="441" height="148" minWidth="51" minHeight="6" maxWidth="2000" maxHeight="2000" minDesiredWidth="0" minDesiredHeight="0" />
 <hidden value="false" />
-<cdrectangleparam minX="10" maxX="1400" minY="10" maxY="900" />
+<cdrectangleparam minX="9" maxX="1399" minY="9" maxY="899" />
 <infoparam name="UPPAAL Pragma" value="A[] CoffeeMachine.nbOfCoins&lt;=2
-E&lt;&gt; CoffeeMachine.nbOfCoins&gt;0
+T E&lt;&gt; CoffeeMachine.nbOfCoins&gt;0
 E&lt;&gt; CoffeeMachine.nbOfCoins&gt;1
 E[] CoffeeMachine.nbOfCoins&lt;2
 
@@ -1340,11 +1340,11 @@ A[] Wallet.nbOfCoins&lt;3
 A[] Wallet.nbOfCoins&gt;=0
 E[] Wallet.nbOfCoins&gt;=1
 
-CoffeeMachine.Beverage --&gt; CoffeeMachine.CoffeeDelivered
+F CoffeeMachine.Beverage --&gt; CoffeeMachine.CoffeeDelivered
 CoffeeMachine.Beverage --&gt; CoffeeMachine.CoffeeDelivered &amp;&amp; CoffeeMachine.TeaDelivered
 CoffeeMachine.Beverage --&gt; CoffeeMachine.CoffeeDelivered || CoffeeMachine.TeaDelivered
 CoffeeMachine.Beverage --&gt; CoffeeMachine.WaitingForFirstCoin 
-CoffeeMachine.WaitingForFirstCoin --&gt; CoffeeMachine.EjectState
+F CoffeeMachine.WaitingForFirstCoin --&gt; CoffeeMachine.EjectState
 CoffeeMachine.WaitingForFirstCoin --&gt; CoffeeMachine.EjectState || CoffeeMachine.WaitingForSecondCoin
 
 CoffeeMachine.CoffeeDelivered --&gt; CoffeeMachine.nbOfCoins&lt;2
@@ -1367,7 +1367,7 @@ CoffeeMachine.CoffeeDelivered --&gt; CoffeeMachine.nbOfCoins&lt;2
 <TGConnectingPoint num="15" id="715" />
 <extraparam>
 <Line value="A[] CoffeeMachine.nbOfCoins&lt;=2" />
-<Line value="E&lt;&gt; CoffeeMachine.nbOfCoins&gt;0" />
+<Line value="T E&lt;&gt; CoffeeMachine.nbOfCoins&gt;0" />
 <Line value="E&lt;&gt; CoffeeMachine.nbOfCoins&gt;1" />
 <Line value="E[] CoffeeMachine.nbOfCoins&lt;2" />
 <Line value="" />
@@ -1375,11 +1375,11 @@ CoffeeMachine.CoffeeDelivered --&gt; CoffeeMachine.nbOfCoins&lt;2
 <Line value="A[] Wallet.nbOfCoins&gt;=0" />
 <Line value="E[] Wallet.nbOfCoins&gt;=1" />
 <Line value="" />
-<Line value="CoffeeMachine.Beverage --&gt; CoffeeMachine.CoffeeDelivered" />
+<Line value="F CoffeeMachine.Beverage --&gt; CoffeeMachine.CoffeeDelivered" />
 <Line value="CoffeeMachine.Beverage --&gt; CoffeeMachine.CoffeeDelivered &amp;&amp; CoffeeMachine.TeaDelivered" />
 <Line value="CoffeeMachine.Beverage --&gt; CoffeeMachine.CoffeeDelivered || CoffeeMachine.TeaDelivered" />
 <Line value="CoffeeMachine.Beverage --&gt; CoffeeMachine.WaitingForFirstCoin " />
-<Line value="CoffeeMachine.WaitingForFirstCoin --&gt; CoffeeMachine.EjectState" />
+<Line value="F CoffeeMachine.WaitingForFirstCoin --&gt; CoffeeMachine.EjectState" />
 <Line value="CoffeeMachine.WaitingForFirstCoin --&gt; CoffeeMachine.EjectState || CoffeeMachine.WaitingForSecondCoin" />
 <Line value="" />
 <Line value="CoffeeMachine.CoffeeDelivered --&gt; CoffeeMachine.nbOfCoins&lt;2" />
@@ -1387,10 +1387,10 @@ CoffeeMachine.CoffeeDelivered --&gt; CoffeeMachine.nbOfCoins&lt;2
 </COMPONENT>
 
 <COMPONENT type="5000" id="741" >
-<cdparam x="106" y="55" />
-<sizeparam width="200" height="218" minWidth="5" minHeight="2" maxWidth="2000" maxHeight="2000" minDesiredWidth="0" minDesiredHeight="0" />
+<cdparam x="67" y="35" />
+<sizeparam width="128" height="139" minWidth="3" minHeight="1" maxWidth="2000" maxHeight="2000" minDesiredWidth="0" minDesiredHeight="0" />
 <hidden value="false" />
-<cdrectangleparam minX="10" maxX="1400" minY="10" maxY="900" />
+<cdrectangleparam minX="9" maxX="1399" minY="9" maxY="899" />
 <infoparam name="Block0" value="Wallet" />
 <TGConnectingPoint num="0" id="717" />
 <TGConnectingPoint num="1" id="718" />
@@ -1430,10 +1430,10 @@ CoffeeMachine.CoffeeDelivered --&gt; CoffeeMachine.nbOfCoins&lt;2
 </COMPONENT>
 
 <COMPONENT type="5000" id="816" >
-<cdparam x="445" y="19" />
-<sizeparam width="461" height="358" minWidth="5" minHeight="2" maxWidth="2000" maxHeight="2000" minDesiredWidth="0" minDesiredHeight="0" />
+<cdparam x="284" y="12" />
+<sizeparam width="295" height="229" minWidth="3" minHeight="1" maxWidth="2000" maxHeight="2000" minDesiredWidth="0" minDesiredHeight="0" />
 <hidden value="false" />
-<cdrectangleparam minX="10" maxX="1400" minY="10" maxY="900" />
+<cdrectangleparam minX="9" maxX="1399" minY="9" maxY="899" />
 <infoparam name="Block0" value="CoffeeMachine" />
 <TGConnectingPoint num="0" id="792" />
 <TGConnectingPoint num="1" id="793" />
@@ -1478,10 +1478,10 @@ CoffeeMachine.CoffeeDelivered --&gt; CoffeeMachine.nbOfCoins&lt;2
 </COMPONENT>
 <SUBCOMPONENT type="5000" id="766" >
 <father id="816" num="0" />
-<cdparam x="696" y="248" />
-<sizeparam width="189" height="102" minWidth="5" minHeight="2" maxWidth="2000" maxHeight="2000" minDesiredWidth="0" minDesiredHeight="0" />
+<cdparam x="445" y="158" />
+<sizeparam width="120" height="65" minWidth="3" minHeight="1" maxWidth="2000" maxHeight="2000" minDesiredWidth="0" minDesiredHeight="0" />
 <hidden value="false" />
-<cdrectangleparam minX="0" maxX="272" minY="0" maxY="256" />
+<cdrectangleparam minX="0" maxX="175" minY="0" maxY="164" />
 <infoparam name="Block1" value="TeaButton" />
 <TGConnectingPoint num="0" id="742" />
 <TGConnectingPoint num="1" id="743" />
@@ -1516,10 +1516,10 @@ CoffeeMachine.CoffeeDelivered --&gt; CoffeeMachine.nbOfCoins&lt;2
 </SUBCOMPONENT>
 <SUBCOMPONENT type="5000" id="791" >
 <father id="816" num="1" />
-<cdparam x="465" y="249" />
-<sizeparam width="190" height="102" minWidth="5" minHeight="2" maxWidth="2000" maxHeight="2000" minDesiredWidth="0" minDesiredHeight="0" />
+<cdparam x="297" y="159" />
+<sizeparam width="121" height="65" minWidth="3" minHeight="1" maxWidth="2000" maxHeight="2000" minDesiredWidth="0" minDesiredHeight="0" />
 <hidden value="false" />
-<cdrectangleparam minX="0" maxX="271" minY="0" maxY="256" />
+<cdrectangleparam minX="0" maxX="174" minY="0" maxY="164" />
 <infoparam name="Block1" value="CoffeeButton" />
 <TGConnectingPoint num="0" id="767" />
 <TGConnectingPoint num="1" id="768" />
diff --git a/src/main/java/ui/window/JDialogSafetyPragma.java b/src/main/java/ui/window/JDialogSafetyPragma.java
index 878fa0d469c8389a53676ea97ac6ddeed4fbdbb1..0b48cf9fb19090a19909f1b1f49ed70cc3545dee 100644
--- a/src/main/java/ui/window/JDialogSafetyPragma.java
+++ b/src/main/java/ui/window/JDialogSafetyPragma.java
@@ -83,7 +83,7 @@ public class JDialogSafetyPragma extends JDialogBase implements ActionListener {
     protected JPopupMenu helpPopup;
     private Map<String, List<String>> blockAttributeMap;
 
-    private JDialogTGComponentHelp helpDialog;
+    //private JDialogTGComponentHelp helpDialog;
 
     protected MainGUI mgui;
 
@@ -416,21 +416,26 @@ public class JDialogSafetyPragma extends JDialogBase implements ActionListener {
         if (mgui == null) {
             TraceManager.addDev("Null mgui");
         }
+
         HelpManager hm = mgui.getHelpManager();
         HelpEntry he = hm.getHelpEntryWithHTMLFile("avatarsafetypragmas.html");
-        if(helpDialog == null) {
+        mgui.openHelpFrame(he);
+
+        /*if(helpDialog == null) {
             helpDialog = new JDialogTGComponentHelp(mgui, he);
             helpDialog.setLocationHelpWindow(help);
-            helpDialog.setSize(500, 500);
+            helpDialog.setSize(700, 600);
+            helpDialog.scrollToTop();
         } else {
             if(!helpDialog.isVisible()) {
                 //helpDialog = new JDialogTGComponentHelp(mgui, he);
                 helpDialog.setLocationHelpWindow(help);
+
                 helpDialog.setVisible(true);
             } else{
                 helpDialog.setVisible(false);
             }
-        }
+        }*/
     }
 
 
diff --git a/src/main/java/ui/window/JDialogTGComponentHelp.java b/src/main/java/ui/window/JDialogTGComponentHelp.java
index fea0ee82c45e1eeb6d620af3d100b7f23e80bccd..07459585679a937c5c5cfc2c686af493892f4d38 100644
--- a/src/main/java/ui/window/JDialogTGComponentHelp.java
+++ b/src/main/java/ui/window/JDialogTGComponentHelp.java
@@ -13,11 +13,12 @@ import java.awt.event.ActionListener;
 
 public class JDialogTGComponentHelp extends JDialog implements ActionListener {
 
-    MainGUI mainGUI;
-    HelpEntry helpEntry;
-    HelpManager helpManager;
-    JButton helpBut;
-    JEditorPane pane;
+    protected MainGUI mainGUI;
+    protected HelpEntry helpEntry;
+    protected HelpManager helpManager;
+    protected JButton helpBut;
+    protected JEditorPane pane;
+    protected JScrollPane jsp;
 
 
     public JDialogTGComponentHelp(MainGUI _mgui, HelpEntry _he) {
@@ -113,4 +114,11 @@ public class JDialogTGComponentHelp extends JDialog implements ActionListener {
         //TraceManager.addDev("help window location ==> (x,y) = " + "(" + dx+ "," + dy + ")" );
         setLocation(dx, dy);
     }
+
+    public void scrollToTop() {
+        if (jsp != null) {
+            jsp.getHorizontalScrollBar().setValue(0);
+            jsp.getVerticalScrollBar().setValue(0);
+        }
+    }
 }
\ No newline at end of file
diff --git a/src/main/resources/help/CTLProperties.odg b/src/main/resources/help/CTLProperties.odg
new file mode 100644
index 0000000000000000000000000000000000000000..8e64b277816df0bb7537ff223eff175a008186db
Binary files /dev/null and b/src/main/resources/help/CTLProperties.odg differ
diff --git a/src/main/resources/help/avatarsafetypragmas.md b/src/main/resources/help/avatarsafetypragmas.md
index c7d7288808ac6648f2c6dc6da4472171c0d6f28c..92819d24398b70f0276b0c26613c7c1e109c36ea 100644
--- a/src/main/resources/help/avatarsafetypragmas.md
+++ b/src/main/resources/help/avatarsafetypragmas.md
@@ -3,15 +3,115 @@
 A safety pragma expresses a property that is expected to be verified by the internal model checker or by UPPAAL.
 
 A safety pragma is as follows, with p and q being properties:
+
 - [T/F] A/E []/<> p
 - [T/F] p --> q
 
-## "A" properties
+Example:
+T A<> Block1.x > 0
+means that the attribute "x" of block "Block1" is always strictly positive.
+
+
+## A[] p
+
+"A" means *on All paths* and "[]" means in *all states*. "A[] p" therefore means that "p" is expected to be satisfied in all states of all paths.
+
+<center>
+![](file:../help/ctlaall_small.png)
+</center>
+
+
+## A<>p
+
+"A" means *on All paths* and "<>" means in *at least one state*. "A<> p" therefore means that "p" is expected to be satisfied in at least one state of all paths. 
+
+<center>
+![](file:../help/ctlaone_small.png)
+</center>
+
+
+
+## E[] properties
+"E" means *on one paths* and "[]" means in *all states*. "E<> p" therefore means that "p" is expected to be satisfied in at least all states of at least one path.
+
+<center>
+![](file:../help/ctleall_small.png)
+</center>
+
+
+
+## E<> properties
+
+<center>
+![](file:../help/ctleall_small.png)
+</center>
+
 
-## "E" properties
 
 ## "Leads to" properties
 
+"p --> q" means that whenever p is encoutred in a state s, all paths starting from state s must have a state in which q is satisfied.
+
+<center>
+![](file:../help/ctlleadsto_small.png)
+</center>
+
 ## True / False
+A pragma may start with "T" or "F". "T" stands for True and "F" for False. T or F precise if the pragma is expected to be true or false during verification.
+- If a pragma starts with a "T" and is satisfied, then a green check is added on its left side.
+- if a pragma starts with a "T" and is not satisfied, then a red cross is added on its left side.
+- If a pragma starts with a  "F" and is satisfied, then a red cross is added on its left side.
+- if a pragma starts with a "F" and is not satisfied, then a green check is added on its left side.
+
+Adding "T" or "F" before at the beginning of a pragma is **optional**. A pragma with no "T" or "F" is assumed to start with a "T".
+
+
+## "p" properties
+
+A pragma termines with a property. A property is a boolean expression. The following operators can be used between sub-boolean expressions:
+- "&&", "||"
+
+A boolean expression can:
+- State that a given state s of a block b has been reached: b.s
+- Use boolean or integer attributes of blocks, comparing them with operators such as : "==", "<", ">", ">=", "<="
+
+
+
+## Examples
+
+The following figures gives the pragmas that are given in the CoffeeMachine use case available on the model repository of TTool.
+
+- A[] CoffeeMachine.nbOfCoins<=2
+
+- T E<> CoffeeMachine.nbOfCoins>0
+
+- E<> CoffeeMachine.nbOfCoins>1
+
+- E[] CoffeeMachine.nbOfCoins<2
+
+- A[] Wallet.nbOfCoins<3
+
+- A[] Wallet.nbOfCoins>=0
+
+- E[] Wallet.nbOfCoins>=1
+
+- F CoffeeMachine.Beverage --> CoffeeMachine.CoffeeDelivered
+
+- CoffeeMachine.Beverage --> CoffeeMachine.CoffeeDelivered && CoffeeMachine.TeaDelivered
+
+- CoffeeMachine.Beverage --> CoffeeMachine.CoffeeDelivered || CoffeeMachine.TeaDelivered
+
+- CoffeeMachine.Beverage --> CoffeeMachine.WaitingForFirstCoin 
+
+- F CoffeeMachine.WaitingForFirstCoin --> CoffeeMachine.EjectState
+
+- CoffeeMachine.WaitingForFirstCoin --> CoffeeMachine.EjectState || CoffeeMachine.WaitingForSecondCoin
+
+- CoffeeMachine.CoffeeDelivered --> CoffeeMachine.nbOfCoins<2
+
+After verifying them with TTool's internal model checker, we obtain the following:
 
+<center>
+![](file:../help/pragmas_cm.png)
+</center>
 
diff --git a/src/main/resources/help/ctlaall.png b/src/main/resources/help/ctlaall.png
new file mode 100644
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diff --git a/src/main/resources/help/ctlleadsto_small.png b/src/main/resources/help/ctlleadsto_small.png
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