diff --git a/org.polarsys.chess.constraints.constraintEditor/.classpath b/plugins/contracts/org.polarsys.chess.contracts.contractEditor/.classpath
similarity index 100%
rename from org.polarsys.chess.constraints.constraintEditor/.classpath
rename to plugins/contracts/org.polarsys.chess.contracts.contractEditor/.classpath
diff --git a/org.polarsys.chess.constraints.constraintEditor/.gitignore b/plugins/contracts/org.polarsys.chess.contracts.contractEditor/.gitignore
similarity index 100%
rename from org.polarsys.chess.constraints.constraintEditor/.gitignore
rename to plugins/contracts/org.polarsys.chess.contracts.contractEditor/.gitignore
diff --git a/org.polarsys.chess.contracts.contractEditor/.project b/plugins/contracts/org.polarsys.chess.contracts.contractEditor/.project
similarity index 100%
rename from org.polarsys.chess.contracts.contractEditor/.project
rename to plugins/contracts/org.polarsys.chess.contracts.contractEditor/.project
diff --git a/org.polarsys.chess.constraints.constraintEditor/.settings/org.eclipse.jdt.core.prefs b/plugins/contracts/org.polarsys.chess.contracts.contractEditor/.settings/org.eclipse.jdt.core.prefs
similarity index 100%
rename from org.polarsys.chess.constraints.constraintEditor/.settings/org.eclipse.jdt.core.prefs
rename to plugins/contracts/org.polarsys.chess.contracts.contractEditor/.settings/org.eclipse.jdt.core.prefs
diff --git a/org.polarsys.chess.contracts.contractEditor/META-INF/MANIFEST.MF b/plugins/contracts/org.polarsys.chess.contracts.contractEditor/META-INF/MANIFEST.MF
similarity index 100%
rename from org.polarsys.chess.contracts.contractEditor/META-INF/MANIFEST.MF
rename to plugins/contracts/org.polarsys.chess.contracts.contractEditor/META-INF/MANIFEST.MF
diff --git a/org.polarsys.chess.contracts.contractEditor/build.properties b/plugins/contracts/org.polarsys.chess.contracts.contractEditor/build.properties
similarity index 100%
rename from org.polarsys.chess.contracts.contractEditor/build.properties
rename to plugins/contracts/org.polarsys.chess.contracts.contractEditor/build.properties
diff --git a/org.polarsys.chess.contracts.contractEditor/icons/add_obj.gif b/plugins/contracts/org.polarsys.chess.contracts.contractEditor/icons/add_obj.gif
similarity index 100%
rename from org.polarsys.chess.contracts.contractEditor/icons/add_obj.gif
rename to plugins/contracts/org.polarsys.chess.contracts.contractEditor/icons/add_obj.gif
diff --git a/org.polarsys.chess.contracts.contractEditor/icons/editor.gif b/plugins/contracts/org.polarsys.chess.contracts.contractEditor/icons/editor.gif
similarity index 100%
rename from org.polarsys.chess.contracts.contractEditor/icons/editor.gif
rename to plugins/contracts/org.polarsys.chess.contracts.contractEditor/icons/editor.gif
diff --git a/org.polarsys.chess.contracts.contractEditor/icons/editor_area.gif b/plugins/contracts/org.polarsys.chess.contracts.contractEditor/icons/editor_area.gif
similarity index 100%
rename from org.polarsys.chess.contracts.contractEditor/icons/editor_area.gif
rename to plugins/contracts/org.polarsys.chess.contracts.contractEditor/icons/editor_area.gif
diff --git a/org.polarsys.chess.contracts.contractEditor/icons/elipses.gif b/plugins/contracts/org.polarsys.chess.contracts.contractEditor/icons/elipses.gif
similarity index 100%
rename from org.polarsys.chess.contracts.contractEditor/icons/elipses.gif
rename to plugins/contracts/org.polarsys.chess.contracts.contractEditor/icons/elipses.gif
diff --git a/org.polarsys.chess.contracts.contractEditor/icons/new_untitled_text_file.gif b/plugins/contracts/org.polarsys.chess.contracts.contractEditor/icons/new_untitled_text_file.gif
similarity index 100%
rename from org.polarsys.chess.contracts.contractEditor/icons/new_untitled_text_file.gif
rename to plugins/contracts/org.polarsys.chess.contracts.contractEditor/icons/new_untitled_text_file.gif
diff --git a/org.polarsys.chess.contracts.contractEditor/plugin.xml b/plugins/contracts/org.polarsys.chess.contracts.contractEditor/plugin.xml
similarity index 100%
rename from org.polarsys.chess.contracts.contractEditor/plugin.xml
rename to plugins/contracts/org.polarsys.chess.contracts.contractEditor/plugin.xml
diff --git a/org.polarsys.chess.contracts.contractEditor/src/org/polarsys/chess/contracts/contractEditor/CustomContractEditorFilter.java b/plugins/contracts/org.polarsys.chess.contracts.contractEditor/src/org/polarsys/chess/contracts/contractEditor/CustomContractEditorFilter.java
similarity index 100%
rename from org.polarsys.chess.contracts.contractEditor/src/org/polarsys/chess/contracts/contractEditor/CustomContractEditorFilter.java
rename to plugins/contracts/org.polarsys.chess.contracts.contractEditor/src/org/polarsys/chess/contracts/contractEditor/CustomContractEditorFilter.java
diff --git a/org.polarsys.chess.contracts.contractEditor/src/org/polarsys/chess/contracts/contractEditor/CustomContractEditorTab.java b/plugins/contracts/org.polarsys.chess.contracts.contractEditor/src/org/polarsys/chess/contracts/contractEditor/CustomContractEditorTab.java
similarity index 100%
rename from org.polarsys.chess.contracts.contractEditor/src/org/polarsys/chess/contracts/contractEditor/CustomContractEditorTab.java
rename to plugins/contracts/org.polarsys.chess.contracts.contractEditor/src/org/polarsys/chess/contracts/contractEditor/CustomContractEditorTab.java
diff --git a/org.polarsys.chess.contracts.contractEditor/src/org/polarsys/chess/contracts/contractEditor/CustomContractEditorView.java b/plugins/contracts/org.polarsys.chess.contracts.contractEditor/src/org/polarsys/chess/contracts/contractEditor/CustomContractEditorView.java
similarity index 100%
rename from org.polarsys.chess.contracts.contractEditor/src/org/polarsys/chess/contracts/contractEditor/CustomContractEditorView.java
rename to plugins/contracts/org.polarsys.chess.contracts.contractEditor/src/org/polarsys/chess/contracts/contractEditor/CustomContractEditorView.java
diff --git a/org.polarsys.chess.contracts.contractEditor/.classpath b/plugins/contracts/org.polarsys.chess.contracts.hierarchicalContractView/.classpath
similarity index 100%
rename from org.polarsys.chess.contracts.contractEditor/.classpath
rename to plugins/contracts/org.polarsys.chess.contracts.hierarchicalContractView/.classpath
diff --git a/org.polarsys.chess.contracts.contractEditor/.gitignore b/plugins/contracts/org.polarsys.chess.contracts.hierarchicalContractView/.gitignore
similarity index 100%
rename from org.polarsys.chess.contracts.contractEditor/.gitignore
rename to plugins/contracts/org.polarsys.chess.contracts.hierarchicalContractView/.gitignore
diff --git a/org.polarsys.chess.contracts.hierarchicalContractView/.project b/plugins/contracts/org.polarsys.chess.contracts.hierarchicalContractView/.project
similarity index 100%
rename from org.polarsys.chess.contracts.hierarchicalContractView/.project
rename to plugins/contracts/org.polarsys.chess.contracts.hierarchicalContractView/.project
diff --git a/org.polarsys.chess.contracts.contractEditor/.settings/org.eclipse.jdt.core.prefs b/plugins/contracts/org.polarsys.chess.contracts.hierarchicalContractView/.settings/org.eclipse.jdt.core.prefs
similarity index 100%
rename from org.polarsys.chess.contracts.contractEditor/.settings/org.eclipse.jdt.core.prefs
rename to plugins/contracts/org.polarsys.chess.contracts.hierarchicalContractView/.settings/org.eclipse.jdt.core.prefs
diff --git a/org.polarsys.chess.contracts.hierarchicalContractView/META-INF/MANIFEST.MF b/plugins/contracts/org.polarsys.chess.contracts.hierarchicalContractView/META-INF/MANIFEST.MF
similarity index 100%
rename from org.polarsys.chess.contracts.hierarchicalContractView/META-INF/MANIFEST.MF
rename to plugins/contracts/org.polarsys.chess.contracts.hierarchicalContractView/META-INF/MANIFEST.MF
diff --git a/org.polarsys.chess.contracts.hierarchicalContractView/build.properties b/plugins/contracts/org.polarsys.chess.contracts.hierarchicalContractView/build.properties
similarity index 100%
rename from org.polarsys.chess.contracts.hierarchicalContractView/build.properties
rename to plugins/contracts/org.polarsys.chess.contracts.hierarchicalContractView/build.properties
diff --git a/org.polarsys.chess.contracts.hierarchicalContractView/icons/ComponentDiagram.gif b/plugins/contracts/org.polarsys.chess.contracts.hierarchicalContractView/icons/ComponentDiagram.gif
similarity index 100%
rename from org.polarsys.chess.contracts.hierarchicalContractView/icons/ComponentDiagram.gif
rename to plugins/contracts/org.polarsys.chess.contracts.hierarchicalContractView/icons/ComponentDiagram.gif
diff --git a/org.polarsys.chess.contracts.hierarchicalContractView/icons/main_tab.gif b/plugins/contracts/org.polarsys.chess.contracts.hierarchicalContractView/icons/main_tab.gif
similarity index 100%
rename from org.polarsys.chess.contracts.hierarchicalContractView/icons/main_tab.gif
rename to plugins/contracts/org.polarsys.chess.contracts.hierarchicalContractView/icons/main_tab.gif
diff --git a/org.polarsys.chess.contracts.hierarchicalContractView/icons/site_element.gif b/plugins/contracts/org.polarsys.chess.contracts.hierarchicalContractView/icons/site_element.gif
similarity index 100%
rename from org.polarsys.chess.contracts.hierarchicalContractView/icons/site_element.gif
rename to plugins/contracts/org.polarsys.chess.contracts.hierarchicalContractView/icons/site_element.gif
diff --git a/org.polarsys.chess.contracts.hierarchicalContractView/plugin.xml b/plugins/contracts/org.polarsys.chess.contracts.hierarchicalContractView/plugin.xml
similarity index 100%
rename from org.polarsys.chess.contracts.hierarchicalContractView/plugin.xml
rename to plugins/contracts/org.polarsys.chess.contracts.hierarchicalContractView/plugin.xml
diff --git a/org.polarsys.chess.contracts.hierarchicalContractView/src/org/polarsys/chess/contracts/hierarchicalContractView/listener/PapyrusListener.java b/plugins/contracts/org.polarsys.chess.contracts.hierarchicalContractView/src/org/polarsys/chess/contracts/hierarchicalContractView/listener/PapyrusListener.java
similarity index 100%
rename from org.polarsys.chess.contracts.hierarchicalContractView/src/org/polarsys/chess/contracts/hierarchicalContractView/listener/PapyrusListener.java
rename to plugins/contracts/org.polarsys.chess.contracts.hierarchicalContractView/src/org/polarsys/chess/contracts/hierarchicalContractView/listener/PapyrusListener.java
diff --git a/org.polarsys.chess.contracts.hierarchicalContractView/src/org/polarsys/chess/contracts/hierarchicalContractView/listener/SelectionListener.java b/plugins/contracts/org.polarsys.chess.contracts.hierarchicalContractView/src/org/polarsys/chess/contracts/hierarchicalContractView/listener/SelectionListener.java
similarity index 100%
rename from org.polarsys.chess.contracts.hierarchicalContractView/src/org/polarsys/chess/contracts/hierarchicalContractView/listener/SelectionListener.java
rename to plugins/contracts/org.polarsys.chess.contracts.hierarchicalContractView/src/org/polarsys/chess/contracts/hierarchicalContractView/listener/SelectionListener.java
diff --git a/org.polarsys.chess.contracts.hierarchicalContractView/src/org/polarsys/chess/contracts/hierarchicalContractView/treeElements/CHESSComponentNode.java b/plugins/contracts/org.polarsys.chess.contracts.hierarchicalContractView/src/org/polarsys/chess/contracts/hierarchicalContractView/treeElements/CHESSComponentNode.java
similarity index 100%
rename from org.polarsys.chess.contracts.hierarchicalContractView/src/org/polarsys/chess/contracts/hierarchicalContractView/treeElements/CHESSComponentNode.java
rename to plugins/contracts/org.polarsys.chess.contracts.hierarchicalContractView/src/org/polarsys/chess/contracts/hierarchicalContractView/treeElements/CHESSComponentNode.java
diff --git a/org.polarsys.chess.contracts.hierarchicalContractView/src/org/polarsys/chess/contracts/hierarchicalContractView/treeElements/CHESSRootNode.java b/plugins/contracts/org.polarsys.chess.contracts.hierarchicalContractView/src/org/polarsys/chess/contracts/hierarchicalContractView/treeElements/CHESSRootNode.java
similarity index 100%
rename from org.polarsys.chess.contracts.hierarchicalContractView/src/org/polarsys/chess/contracts/hierarchicalContractView/treeElements/CHESSRootNode.java
rename to plugins/contracts/org.polarsys.chess.contracts.hierarchicalContractView/src/org/polarsys/chess/contracts/hierarchicalContractView/treeElements/CHESSRootNode.java
diff --git a/org.polarsys.chess.contracts.hierarchicalContractView/src/org/polarsys/chess/contracts/hierarchicalContractView/treeElements/CHESSSystemNode.java b/plugins/contracts/org.polarsys.chess.contracts.hierarchicalContractView/src/org/polarsys/chess/contracts/hierarchicalContractView/treeElements/CHESSSystemNode.java
similarity index 100%
rename from org.polarsys.chess.contracts.hierarchicalContractView/src/org/polarsys/chess/contracts/hierarchicalContractView/treeElements/CHESSSystemNode.java
rename to plugins/contracts/org.polarsys.chess.contracts.hierarchicalContractView/src/org/polarsys/chess/contracts/hierarchicalContractView/treeElements/CHESSSystemNode.java
diff --git a/org.polarsys.chess.contracts.hierarchicalContractView/src/org/polarsys/chess/contracts/hierarchicalContractView/view/CustomHierarchicalView.java b/plugins/contracts/org.polarsys.chess.contracts.hierarchicalContractView/src/org/polarsys/chess/contracts/hierarchicalContractView/view/CustomHierarchicalView.java
similarity index 100%
rename from org.polarsys.chess.contracts.hierarchicalContractView/src/org/polarsys/chess/contracts/hierarchicalContractView/view/CustomHierarchicalView.java
rename to plugins/contracts/org.polarsys.chess.contracts.hierarchicalContractView/src/org/polarsys/chess/contracts/hierarchicalContractView/view/CustomHierarchicalView.java
diff --git a/org.polarsys.chess.contracts.hierarchicalContractView/.classpath b/plugins/contracts/org.polarsys.chess.contracts.refinementView/.classpath
similarity index 100%
rename from org.polarsys.chess.contracts.hierarchicalContractView/.classpath
rename to plugins/contracts/org.polarsys.chess.contracts.refinementView/.classpath
diff --git a/org.polarsys.chess.contracts.hierarchicalContractView/.gitignore b/plugins/contracts/org.polarsys.chess.contracts.refinementView/.gitignore
similarity index 100%
rename from org.polarsys.chess.contracts.hierarchicalContractView/.gitignore
rename to plugins/contracts/org.polarsys.chess.contracts.refinementView/.gitignore
diff --git a/org.polarsys.chess.contracts.refinementView/.project b/plugins/contracts/org.polarsys.chess.contracts.refinementView/.project
similarity index 100%
rename from org.polarsys.chess.contracts.refinementView/.project
rename to plugins/contracts/org.polarsys.chess.contracts.refinementView/.project
diff --git a/org.polarsys.chess.contracts.hierarchicalContractView/.settings/org.eclipse.jdt.core.prefs b/plugins/contracts/org.polarsys.chess.contracts.refinementView/.settings/org.eclipse.jdt.core.prefs
similarity index 100%
rename from org.polarsys.chess.contracts.hierarchicalContractView/.settings/org.eclipse.jdt.core.prefs
rename to plugins/contracts/org.polarsys.chess.contracts.refinementView/.settings/org.eclipse.jdt.core.prefs
diff --git a/org.polarsys.chess.contracts.refinementView/META-INF/MANIFEST.MF b/plugins/contracts/org.polarsys.chess.contracts.refinementView/META-INF/MANIFEST.MF
similarity index 100%
rename from org.polarsys.chess.contracts.refinementView/META-INF/MANIFEST.MF
rename to plugins/contracts/org.polarsys.chess.contracts.refinementView/META-INF/MANIFEST.MF
diff --git a/org.polarsys.chess.contracts.refinementView/build.properties b/plugins/contracts/org.polarsys.chess.contracts.refinementView/build.properties
similarity index 100%
rename from org.polarsys.chess.contracts.refinementView/build.properties
rename to plugins/contracts/org.polarsys.chess.contracts.refinementView/build.properties
diff --git a/org.polarsys.chess.contracts.refinementView/icons/ComponentDiagram.gif b/plugins/contracts/org.polarsys.chess.contracts.refinementView/icons/ComponentDiagram.gif
similarity index 100%
rename from org.polarsys.chess.contracts.refinementView/icons/ComponentDiagram.gif
rename to plugins/contracts/org.polarsys.chess.contracts.refinementView/icons/ComponentDiagram.gif
diff --git a/org.polarsys.chess.contracts.refinementView/icons/main_tab.gif b/plugins/contracts/org.polarsys.chess.contracts.refinementView/icons/main_tab.gif
similarity index 100%
rename from org.polarsys.chess.contracts.refinementView/icons/main_tab.gif
rename to plugins/contracts/org.polarsys.chess.contracts.refinementView/icons/main_tab.gif
diff --git a/org.polarsys.chess.contracts.refinementView/icons/site_element.gif b/plugins/contracts/org.polarsys.chess.contracts.refinementView/icons/site_element.gif
similarity index 100%
rename from org.polarsys.chess.contracts.refinementView/icons/site_element.gif
rename to plugins/contracts/org.polarsys.chess.contracts.refinementView/icons/site_element.gif
diff --git a/org.polarsys.chess.contracts.refinementView/icons/weakContract.gif b/plugins/contracts/org.polarsys.chess.contracts.refinementView/icons/weakContract.gif
similarity index 100%
rename from org.polarsys.chess.contracts.refinementView/icons/weakContract.gif
rename to plugins/contracts/org.polarsys.chess.contracts.refinementView/icons/weakContract.gif
diff --git a/org.polarsys.chess.contracts.refinementView/plugin.xml b/plugins/contracts/org.polarsys.chess.contracts.refinementView/plugin.xml
similarity index 100%
rename from org.polarsys.chess.contracts.refinementView/plugin.xml
rename to plugins/contracts/org.polarsys.chess.contracts.refinementView/plugin.xml
diff --git a/org.polarsys.chess.contracts.refinementView/src/org/polarsys/chess/contracts/refinementView/listener/PapyrusListener.java b/plugins/contracts/org.polarsys.chess.contracts.refinementView/src/org/polarsys/chess/contracts/refinementView/listener/PapyrusListener.java
similarity index 100%
rename from org.polarsys.chess.contracts.refinementView/src/org/polarsys/chess/contracts/refinementView/listener/PapyrusListener.java
rename to plugins/contracts/org.polarsys.chess.contracts.refinementView/src/org/polarsys/chess/contracts/refinementView/listener/PapyrusListener.java
diff --git a/org.polarsys.chess.contracts.refinementView/src/org/polarsys/chess/contracts/refinementView/listener/SelectionListener.java b/plugins/contracts/org.polarsys.chess.contracts.refinementView/src/org/polarsys/chess/contracts/refinementView/listener/SelectionListener.java
similarity index 100%
rename from org.polarsys.chess.contracts.refinementView/src/org/polarsys/chess/contracts/refinementView/listener/SelectionListener.java
rename to plugins/contracts/org.polarsys.chess.contracts.refinementView/src/org/polarsys/chess/contracts/refinementView/listener/SelectionListener.java
diff --git a/org.polarsys.chess.contracts.refinementView/src/org/polarsys/chess/contracts/refinementView/treeElements/CHESSContractNode.java b/plugins/contracts/org.polarsys.chess.contracts.refinementView/src/org/polarsys/chess/contracts/refinementView/treeElements/CHESSContractNode.java
similarity index 100%
rename from org.polarsys.chess.contracts.refinementView/src/org/polarsys/chess/contracts/refinementView/treeElements/CHESSContractNode.java
rename to plugins/contracts/org.polarsys.chess.contracts.refinementView/src/org/polarsys/chess/contracts/refinementView/treeElements/CHESSContractNode.java
diff --git a/org.polarsys.chess.contracts.refinementView/src/org/polarsys/chess/contracts/refinementView/treeElements/CHESSRootNode.java b/plugins/contracts/org.polarsys.chess.contracts.refinementView/src/org/polarsys/chess/contracts/refinementView/treeElements/CHESSRootNode.java
similarity index 100%
rename from org.polarsys.chess.contracts.refinementView/src/org/polarsys/chess/contracts/refinementView/treeElements/CHESSRootNode.java
rename to plugins/contracts/org.polarsys.chess.contracts.refinementView/src/org/polarsys/chess/contracts/refinementView/treeElements/CHESSRootNode.java
diff --git a/org.polarsys.chess.contracts.refinementView/src/org/polarsys/chess/contracts/refinementView/view/CustomRefinementView.java b/plugins/contracts/org.polarsys.chess.contracts.refinementView/src/org/polarsys/chess/contracts/refinementView/view/CustomRefinementView.java
similarity index 100%
rename from org.polarsys.chess.contracts.refinementView/src/org/polarsys/chess/contracts/refinementView/view/CustomRefinementView.java
rename to plugins/contracts/org.polarsys.chess.contracts.refinementView/src/org/polarsys/chess/contracts/refinementView/view/CustomRefinementView.java
diff --git a/org.polarsys.chess.contracts.refinementView/.classpath b/plugins/contracts/org.polarsys.chess.contracts.safetyAnalysis/.classpath
similarity index 100%
rename from org.polarsys.chess.contracts.refinementView/.classpath
rename to plugins/contracts/org.polarsys.chess.contracts.safetyAnalysis/.classpath
diff --git a/org.polarsys.chess.contracts.refinementView/.gitignore b/plugins/contracts/org.polarsys.chess.contracts.safetyAnalysis/.gitignore
similarity index 100%
rename from org.polarsys.chess.contracts.refinementView/.gitignore
rename to plugins/contracts/org.polarsys.chess.contracts.safetyAnalysis/.gitignore
diff --git a/org.polarsys.chess.contracts.safetyAnalysis/.project b/plugins/contracts/org.polarsys.chess.contracts.safetyAnalysis/.project
similarity index 100%
rename from org.polarsys.chess.contracts.safetyAnalysis/.project
rename to plugins/contracts/org.polarsys.chess.contracts.safetyAnalysis/.project
diff --git a/org.polarsys.chess.contracts.refinementView/.settings/org.eclipse.jdt.core.prefs b/plugins/contracts/org.polarsys.chess.contracts.safetyAnalysis/.settings/org.eclipse.jdt.core.prefs
similarity index 100%
rename from org.polarsys.chess.contracts.refinementView/.settings/org.eclipse.jdt.core.prefs
rename to plugins/contracts/org.polarsys.chess.contracts.safetyAnalysis/.settings/org.eclipse.jdt.core.prefs
diff --git a/org.polarsys.chess.contracts.safetyAnalysis/META-INF/MANIFEST.MF b/plugins/contracts/org.polarsys.chess.contracts.safetyAnalysis/META-INF/MANIFEST.MF
similarity index 100%
rename from org.polarsys.chess.contracts.safetyAnalysis/META-INF/MANIFEST.MF
rename to plugins/contracts/org.polarsys.chess.contracts.safetyAnalysis/META-INF/MANIFEST.MF
diff --git a/org.polarsys.chess.constraints.constraintEditor/build.properties b/plugins/contracts/org.polarsys.chess.contracts.safetyAnalysis/build.properties
similarity index 100%
rename from org.polarsys.chess.constraints.constraintEditor/build.properties
rename to plugins/contracts/org.polarsys.chess.contracts.safetyAnalysis/build.properties
diff --git a/org.polarsys.chess.contracts.safetyAnalysis/plugin.xml b/plugins/contracts/org.polarsys.chess.contracts.safetyAnalysis/plugin.xml
similarity index 100%
rename from org.polarsys.chess.contracts.safetyAnalysis/plugin.xml
rename to plugins/contracts/org.polarsys.chess.contracts.safetyAnalysis/plugin.xml
diff --git a/org.polarsys.chess.contracts.safetyAnalysis/src/org/polarsys/chess/safetyAnalysis/commands/ComputeContractFaultTreeCommand.java b/plugins/contracts/org.polarsys.chess.contracts.safetyAnalysis/src/org/polarsys/chess/safetyAnalysis/commands/ComputeContractFaultTreeCommand.java
similarity index 100%
rename from org.polarsys.chess.contracts.safetyAnalysis/src/org/polarsys/chess/safetyAnalysis/commands/ComputeContractFaultTreeCommand.java
rename to plugins/contracts/org.polarsys.chess.contracts.safetyAnalysis/src/org/polarsys/chess/safetyAnalysis/commands/ComputeContractFaultTreeCommand.java
diff --git a/org.polarsys.chess.contracts.safetyAnalysis/src/org/polarsys/chess/safetyAnalysis/commands/debug/ComputeContractFaultTreeOnFileCommand.java b/plugins/contracts/org.polarsys.chess.contracts.safetyAnalysis/src/org/polarsys/chess/safetyAnalysis/commands/debug/ComputeContractFaultTreeOnFileCommand.java
similarity index 100%
rename from org.polarsys.chess.contracts.safetyAnalysis/src/org/polarsys/chess/safetyAnalysis/commands/debug/ComputeContractFaultTreeOnFileCommand.java
rename to plugins/contracts/org.polarsys.chess.contracts.safetyAnalysis/src/org/polarsys/chess/safetyAnalysis/commands/debug/ComputeContractFaultTreeOnFileCommand.java
diff --git a/org.polarsys.chess.contracts.safetyAnalysis/.classpath b/plugins/contracts/org.polarsys.chess.contracts.verificationService/.classpath
similarity index 100%
rename from org.polarsys.chess.contracts.safetyAnalysis/.classpath
rename to plugins/contracts/org.polarsys.chess.contracts.verificationService/.classpath
diff --git a/org.polarsys.chess.contracts.verificationService/.project b/plugins/contracts/org.polarsys.chess.contracts.verificationService/.project
similarity index 100%
rename from org.polarsys.chess.contracts.verificationService/.project
rename to plugins/contracts/org.polarsys.chess.contracts.verificationService/.project
diff --git a/org.polarsys.chess.contracts.verificationService/META-INF/MANIFEST.MF b/plugins/contracts/org.polarsys.chess.contracts.verificationService/META-INF/MANIFEST.MF
similarity index 100%
rename from org.polarsys.chess.contracts.verificationService/META-INF/MANIFEST.MF
rename to plugins/contracts/org.polarsys.chess.contracts.verificationService/META-INF/MANIFEST.MF
diff --git a/org.polarsys.chess.contracts.verificationService/bin/.gitignore b/plugins/contracts/org.polarsys.chess.contracts.verificationService/bin/.gitignore
similarity index 100%
rename from org.polarsys.chess.contracts.verificationService/bin/.gitignore
rename to plugins/contracts/org.polarsys.chess.contracts.verificationService/bin/.gitignore
diff --git a/org.polarsys.chess.contracts.safetyAnalysis/build.properties b/plugins/contracts/org.polarsys.chess.contracts.verificationService/build.properties
similarity index 100%
rename from org.polarsys.chess.contracts.safetyAnalysis/build.properties
rename to plugins/contracts/org.polarsys.chess.contracts.verificationService/build.properties
diff --git a/org.polarsys.chess.contracts.verificationService/plugin.xml b/plugins/contracts/org.polarsys.chess.contracts.verificationService/plugin.xml
similarity index 100%
rename from org.polarsys.chess.contracts.verificationService/plugin.xml
rename to plugins/contracts/org.polarsys.chess.contracts.verificationService/plugin.xml
diff --git a/org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/commands/CheckValidationPropertyCommand.java b/plugins/contracts/org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/commands/CheckValidationPropertyCommand.java
similarity index 100%
rename from org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/commands/CheckValidationPropertyCommand.java
rename to plugins/contracts/org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/commands/CheckValidationPropertyCommand.java
diff --git a/org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/commands/ContractImplementationCommand.java b/plugins/contracts/org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/commands/ContractImplementationCommand.java
similarity index 100%
rename from org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/commands/ContractImplementationCommand.java
rename to plugins/contracts/org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/commands/ContractImplementationCommand.java
diff --git a/org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/commands/ContractRefinementCommand.java b/plugins/contracts/org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/commands/ContractRefinementCommand.java
similarity index 100%
rename from org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/commands/ContractRefinementCommand.java
rename to plugins/contracts/org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/commands/ContractRefinementCommand.java
diff --git a/org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/commands/ExportModelToFileCommand.java b/plugins/contracts/org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/commands/ExportModelToFileCommand.java
similarity index 100%
rename from org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/commands/ExportModelToFileCommand.java
rename to plugins/contracts/org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/commands/ExportModelToFileCommand.java
diff --git a/org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/commands/ModelCheckingCommand.java b/plugins/contracts/org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/commands/ModelCheckingCommand.java
similarity index 100%
rename from org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/commands/ModelCheckingCommand.java
rename to plugins/contracts/org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/commands/ModelCheckingCommand.java
diff --git a/org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/commands/debug/CheckValidationPropertyOnFileCommand.java b/plugins/contracts/org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/commands/debug/CheckValidationPropertyOnFileCommand.java
similarity index 100%
rename from org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/commands/debug/CheckValidationPropertyOnFileCommand.java
rename to plugins/contracts/org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/commands/debug/CheckValidationPropertyOnFileCommand.java
diff --git a/org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/commands/debug/ContractImplementationOnFileCommand.java b/plugins/contracts/org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/commands/debug/ContractImplementationOnFileCommand.java
similarity index 100%
rename from org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/commands/debug/ContractImplementationOnFileCommand.java
rename to plugins/contracts/org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/commands/debug/ContractImplementationOnFileCommand.java
diff --git a/org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/commands/debug/ContractRefinementOnFileCommand.java b/plugins/contracts/org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/commands/debug/ContractRefinementOnFileCommand.java
similarity index 100%
rename from org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/commands/debug/ContractRefinementOnFileCommand.java
rename to plugins/contracts/org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/commands/debug/ContractRefinementOnFileCommand.java
diff --git a/org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/commands/debug/ModelCheckingOnFileCommand.java b/plugins/contracts/org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/commands/debug/ModelCheckingOnFileCommand.java
similarity index 100%
rename from org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/commands/debug/ModelCheckingOnFileCommand.java
rename to plugins/contracts/org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/commands/debug/ModelCheckingOnFileCommand.java
diff --git a/org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/commands/debug/RuntimeErrorsOnFileCommand.java b/plugins/contracts/org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/commands/debug/RuntimeErrorsOnFileCommand.java
similarity index 100%
rename from org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/commands/debug/RuntimeErrorsOnFileCommand.java
rename to plugins/contracts/org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/commands/debug/RuntimeErrorsOnFileCommand.java
diff --git a/org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/model/ChessSystemModel.java b/plugins/contracts/org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/model/ChessSystemModel.java
similarity index 100%
rename from org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/model/ChessSystemModel.java
rename to plugins/contracts/org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/model/ChessSystemModel.java
diff --git a/org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/services/SmvExportService.java b/plugins/contracts/org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/services/SmvExportService.java
similarity index 100%
rename from org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/services/SmvExportService.java
rename to plugins/contracts/org.polarsys.chess.contracts.verificationService/src/org/polarsys/chess/verificationService/services/SmvExportService.java
diff --git a/org.polarsys.chess.contracts.verificationService/.classpath b/plugins/org.polarsys.chess.constraints.constraintEditor/.classpath
similarity index 100%
rename from org.polarsys.chess.contracts.verificationService/.classpath
rename to plugins/org.polarsys.chess.constraints.constraintEditor/.classpath
diff --git a/org.polarsys.chess.contracts.safetyAnalysis/.gitignore b/plugins/org.polarsys.chess.constraints.constraintEditor/.gitignore
similarity index 100%
rename from org.polarsys.chess.contracts.safetyAnalysis/.gitignore
rename to plugins/org.polarsys.chess.constraints.constraintEditor/.gitignore
diff --git a/org.polarsys.chess.constraints.constraintEditor/.project b/plugins/org.polarsys.chess.constraints.constraintEditor/.project
similarity index 100%
rename from org.polarsys.chess.constraints.constraintEditor/.project
rename to plugins/org.polarsys.chess.constraints.constraintEditor/.project
diff --git a/org.polarsys.chess.contracts.safetyAnalysis/.settings/org.eclipse.jdt.core.prefs b/plugins/org.polarsys.chess.constraints.constraintEditor/.settings/org.eclipse.jdt.core.prefs
similarity index 100%
rename from org.polarsys.chess.contracts.safetyAnalysis/.settings/org.eclipse.jdt.core.prefs
rename to plugins/org.polarsys.chess.constraints.constraintEditor/.settings/org.eclipse.jdt.core.prefs
diff --git a/org.polarsys.chess.constraints.constraintEditor/META-INF/MANIFEST.MF b/plugins/org.polarsys.chess.constraints.constraintEditor/META-INF/MANIFEST.MF
similarity index 100%
rename from org.polarsys.chess.constraints.constraintEditor/META-INF/MANIFEST.MF
rename to plugins/org.polarsys.chess.constraints.constraintEditor/META-INF/MANIFEST.MF
diff --git a/org.polarsys.chess.contracts.verificationService/build.properties b/plugins/org.polarsys.chess.constraints.constraintEditor/build.properties
similarity index 100%
rename from org.polarsys.chess.contracts.verificationService/build.properties
rename to plugins/org.polarsys.chess.constraints.constraintEditor/build.properties
diff --git a/org.polarsys.chess.constraints.constraintEditor/plugin.xml b/plugins/org.polarsys.chess.constraints.constraintEditor/plugin.xml
similarity index 100%
rename from org.polarsys.chess.constraints.constraintEditor/plugin.xml
rename to plugins/org.polarsys.chess.constraints.constraintEditor/plugin.xml
diff --git a/org.polarsys.chess.constraints.constraintEditor/src/org/polarsys/chess/constraints/constraintEditor/ConstraintEditorFilter.java b/plugins/org.polarsys.chess.constraints.constraintEditor/src/org/polarsys/chess/constraints/constraintEditor/ConstraintEditorFilter.java
similarity index 100%
rename from org.polarsys.chess.constraints.constraintEditor/src/org/polarsys/chess/constraints/constraintEditor/ConstraintEditorFilter.java
rename to plugins/org.polarsys.chess.constraints.constraintEditor/src/org/polarsys/chess/constraints/constraintEditor/ConstraintEditorFilter.java
diff --git a/org.polarsys.chess.constraints.constraintEditor/src/org/polarsys/chess/constraints/constraintEditor/CustomConstraintEditorTab.java b/plugins/org.polarsys.chess.constraints.constraintEditor/src/org/polarsys/chess/constraints/constraintEditor/CustomConstraintEditorTab.java
similarity index 100%
rename from org.polarsys.chess.constraints.constraintEditor/src/org/polarsys/chess/constraints/constraintEditor/CustomConstraintEditorTab.java
rename to plugins/org.polarsys.chess.constraints.constraintEditor/src/org/polarsys/chess/constraints/constraintEditor/CustomConstraintEditorTab.java
diff --git a/org.polarsys.chess.diagram.ui/.classpath b/plugins/org.polarsys.chess.diagram.ui/.classpath
similarity index 100%
rename from org.polarsys.chess.diagram.ui/.classpath
rename to plugins/org.polarsys.chess.diagram.ui/.classpath
diff --git a/org.polarsys.chess.diagram.ui/.gitignore b/plugins/org.polarsys.chess.diagram.ui/.gitignore
similarity index 100%
rename from org.polarsys.chess.diagram.ui/.gitignore
rename to plugins/org.polarsys.chess.diagram.ui/.gitignore
diff --git a/org.polarsys.chess.diagram.ui/.project b/plugins/org.polarsys.chess.diagram.ui/.project
similarity index 100%
rename from org.polarsys.chess.diagram.ui/.project
rename to plugins/org.polarsys.chess.diagram.ui/.project
diff --git a/org.polarsys.chess.diagram.ui/.settings/org.eclipse.jdt.core.prefs b/plugins/org.polarsys.chess.diagram.ui/.settings/org.eclipse.jdt.core.prefs
similarity index 100%
rename from org.polarsys.chess.diagram.ui/.settings/org.eclipse.jdt.core.prefs
rename to plugins/org.polarsys.chess.diagram.ui/.settings/org.eclipse.jdt.core.prefs
diff --git a/org.polarsys.chess.diagram.ui/META-INF/MANIFEST.MF b/plugins/org.polarsys.chess.diagram.ui/META-INF/MANIFEST.MF
similarity index 100%
rename from org.polarsys.chess.diagram.ui/META-INF/MANIFEST.MF
rename to plugins/org.polarsys.chess.diagram.ui/META-INF/MANIFEST.MF
diff --git a/org.polarsys.chess.diagram.ui/build.properties b/plugins/org.polarsys.chess.diagram.ui/build.properties
similarity index 100%
rename from org.polarsys.chess.diagram.ui/build.properties
rename to plugins/org.polarsys.chess.diagram.ui/build.properties
diff --git a/org.polarsys.chess.diagram.ui/plugin.xml b/plugins/org.polarsys.chess.diagram.ui/plugin.xml
similarity index 100%
rename from org.polarsys.chess.diagram.ui/plugin.xml
rename to plugins/org.polarsys.chess.diagram.ui/plugin.xml
diff --git a/org.polarsys.chess.diagram.ui/src/org/polarsys/chess/diagram/ui/commands/ExportComponentToImageCommand.java b/plugins/org.polarsys.chess.diagram.ui/src/org/polarsys/chess/diagram/ui/commands/ExportComponentToImageCommand.java
similarity index 100%
rename from org.polarsys.chess.diagram.ui/src/org/polarsys/chess/diagram/ui/commands/ExportComponentToImageCommand.java
rename to plugins/org.polarsys.chess.diagram.ui/src/org/polarsys/chess/diagram/ui/commands/ExportComponentToImageCommand.java
diff --git a/org.polarsys.chess.diagram.ui/src/org/polarsys/chess/diagram/ui/commands/ExportModelToDocumentCommand.java b/plugins/org.polarsys.chess.diagram.ui/src/org/polarsys/chess/diagram/ui/commands/ExportModelToDocumentCommand.java
similarity index 100%
rename from org.polarsys.chess.diagram.ui/src/org/polarsys/chess/diagram/ui/commands/ExportModelToDocumentCommand.java
rename to plugins/org.polarsys.chess.diagram.ui/src/org/polarsys/chess/diagram/ui/commands/ExportModelToDocumentCommand.java
diff --git a/org.polarsys.chess.diagram.ui/src/org/polarsys/chess/diagram/ui/commands/GenerateDocumentCommand.java b/plugins/org.polarsys.chess.diagram.ui/src/org/polarsys/chess/diagram/ui/commands/GenerateDocumentCommand.java
similarity index 100%
rename from org.polarsys.chess.diagram.ui/src/org/polarsys/chess/diagram/ui/commands/GenerateDocumentCommand.java
rename to plugins/org.polarsys.chess.diagram.ui/src/org/polarsys/chess/diagram/ui/commands/GenerateDocumentCommand.java
diff --git a/org.polarsys.chess.diagram.ui/src/org/polarsys/chess/diagram/ui/docGenerators/CHESSBlockDefinitionDiagramModel.java b/plugins/org.polarsys.chess.diagram.ui/src/org/polarsys/chess/diagram/ui/docGenerators/CHESSBlockDefinitionDiagramModel.java
similarity index 100%
rename from org.polarsys.chess.diagram.ui/src/org/polarsys/chess/diagram/ui/docGenerators/CHESSBlockDefinitionDiagramModel.java
rename to plugins/org.polarsys.chess.diagram.ui/src/org/polarsys/chess/diagram/ui/docGenerators/CHESSBlockDefinitionDiagramModel.java
diff --git a/org.polarsys.chess.diagram.ui/src/org/polarsys/chess/diagram/ui/docGenerators/CHESSInternalBlockDiagramModel.java b/plugins/org.polarsys.chess.diagram.ui/src/org/polarsys/chess/diagram/ui/docGenerators/CHESSInternalBlockDiagramModel.java
similarity index 100%
rename from org.polarsys.chess.diagram.ui/src/org/polarsys/chess/diagram/ui/docGenerators/CHESSInternalBlockDiagramModel.java
rename to plugins/org.polarsys.chess.diagram.ui/src/org/polarsys/chess/diagram/ui/docGenerators/CHESSInternalBlockDiagramModel.java
diff --git a/org.polarsys.chess.diagram.ui/src/org/polarsys/chess/diagram/ui/services/CHESSDiagramsGeneratorService.java b/plugins/org.polarsys.chess.diagram.ui/src/org/polarsys/chess/diagram/ui/services/CHESSDiagramsGeneratorService.java
similarity index 100%
rename from org.polarsys.chess.diagram.ui/src/org/polarsys/chess/diagram/ui/services/CHESSDiagramsGeneratorService.java
rename to plugins/org.polarsys.chess.diagram.ui/src/org/polarsys/chess/diagram/ui/services/CHESSDiagramsGeneratorService.java
diff --git a/org.polarsys.chess.diagram.ui/src/org/polarsys/chess/diagram/ui/utils/ExportDialogUtils.java b/plugins/org.polarsys.chess.diagram.ui/src/org/polarsys/chess/diagram/ui/utils/ExportDialogUtils.java
similarity index 100%
rename from org.polarsys.chess.diagram.ui/src/org/polarsys/chess/diagram/ui/utils/ExportDialogUtils.java
rename to plugins/org.polarsys.chess.diagram.ui/src/org/polarsys/chess/diagram/ui/utils/ExportDialogUtils.java
diff --git a/org.polarsys.chess.properties.propertyEditor/.classpath b/plugins/org.polarsys.chess.properties.propertyEditor/.classpath
similarity index 100%
rename from org.polarsys.chess.properties.propertyEditor/.classpath
rename to plugins/org.polarsys.chess.properties.propertyEditor/.classpath
diff --git a/org.polarsys.chess.properties.propertyEditor/.gitignore b/plugins/org.polarsys.chess.properties.propertyEditor/.gitignore
similarity index 100%
rename from org.polarsys.chess.properties.propertyEditor/.gitignore
rename to plugins/org.polarsys.chess.properties.propertyEditor/.gitignore
diff --git a/org.polarsys.chess.properties.propertyEditor/.project b/plugins/org.polarsys.chess.properties.propertyEditor/.project
similarity index 100%
rename from org.polarsys.chess.properties.propertyEditor/.project
rename to plugins/org.polarsys.chess.properties.propertyEditor/.project
diff --git a/org.polarsys.chess.properties.propertyEditor/.settings/org.eclipse.jdt.core.prefs b/plugins/org.polarsys.chess.properties.propertyEditor/.settings/org.eclipse.jdt.core.prefs
similarity index 100%
rename from org.polarsys.chess.properties.propertyEditor/.settings/org.eclipse.jdt.core.prefs
rename to plugins/org.polarsys.chess.properties.propertyEditor/.settings/org.eclipse.jdt.core.prefs
diff --git a/org.polarsys.chess.properties.propertyEditor/META-INF/MANIFEST.MF b/plugins/org.polarsys.chess.properties.propertyEditor/META-INF/MANIFEST.MF
similarity index 100%
rename from org.polarsys.chess.properties.propertyEditor/META-INF/MANIFEST.MF
rename to plugins/org.polarsys.chess.properties.propertyEditor/META-INF/MANIFEST.MF
diff --git a/org.polarsys.chess.properties.propertyEditor/build.properties b/plugins/org.polarsys.chess.properties.propertyEditor/build.properties
similarity index 100%
rename from org.polarsys.chess.properties.propertyEditor/build.properties
rename to plugins/org.polarsys.chess.properties.propertyEditor/build.properties
diff --git a/org.polarsys.chess.properties.propertyEditor/plugin.xml b/plugins/org.polarsys.chess.properties.propertyEditor/plugin.xml
similarity index 100%
rename from org.polarsys.chess.properties.propertyEditor/plugin.xml
rename to plugins/org.polarsys.chess.properties.propertyEditor/plugin.xml
diff --git a/org.polarsys.chess.properties.propertyEditor/src/org/polarsys/chess/properties/propertyEditor/CustomPropertyEditorTab.java b/plugins/org.polarsys.chess.properties.propertyEditor/src/org/polarsys/chess/properties/propertyEditor/CustomPropertyEditorTab.java
similarity index 100%
rename from org.polarsys.chess.properties.propertyEditor/src/org/polarsys/chess/properties/propertyEditor/CustomPropertyEditorTab.java
rename to plugins/org.polarsys.chess.properties.propertyEditor/src/org/polarsys/chess/properties/propertyEditor/CustomPropertyEditorTab.java
diff --git a/org.polarsys.chess.properties.propertyEditor/src/org/polarsys/chess/properties/propertyEditor/PropertyEditorFilter.java b/plugins/org.polarsys.chess.properties.propertyEditor/src/org/polarsys/chess/properties/propertyEditor/PropertyEditorFilter.java
similarity index 100%
rename from org.polarsys.chess.properties.propertyEditor/src/org/polarsys/chess/properties/propertyEditor/PropertyEditorFilter.java
rename to plugins/org.polarsys.chess.properties.propertyEditor/src/org/polarsys/chess/properties/propertyEditor/PropertyEditorFilter.java