diff --git a/EMkMachMgr.h b/EMkMachMgr.h
index 142fcdf..cb7e103 100644
--- a/EMkMachMgr.h
+++ b/EMkMachMgr.h
@@ -104,19 +104,30 @@ class __declspec( novtable) IMachMgr
       virtual bool TdbGetToolParam( const std::string& sName, int nType, double& dVal) const = 0 ;
       virtual bool TdbGetToolParam( const std::string& sName, int nType, std::string& sVal) const = 0 ;
       virtual bool TdbSave( void) const = 0 ;
-     // Operations
-      virtual int  AddMachining( const std::string& sName, const std::string& sMachining) = 0 ;
-      virtual bool SetMachiningParam( int nType, bool bVal) = 0 ;
-      virtual bool SetMachiningParam( int nType, int nVal) = 0 ;
-      virtual bool SetMachiningParam( int nType, double dVal) = 0 ;
-      virtual bool SetMachiningParam( int nType, const std::string& sVal) = 0 ;
-      virtual bool SetMachiningGeometry( const SELVECTOR& vIds) = 0 ;
-      virtual bool Apply( void) = 0 ;
+     // Operations : general
+      virtual int  GetOperationCount( void) const = 0 ;
       virtual int  GetFirstOperation( void) const = 0 ;
       virtual int  GetNextOperation( int nId) const = 0 ;
       virtual int  GetLastOperation( void) const = 0 ;
       virtual int  GetPrevOperation( int nId) const = 0 ;
       virtual int  GetOperationType( int nId) const = 0 ;
+      virtual std::string GetOperationName( int nId) const = 0 ;
+      virtual int  GetOperationId( const std::string& sName) const = 0 ;
+      virtual bool RemoveOperation( int nId) = 0 ;
+      virtual bool RemoveAllOperations( bool bExceptFirstDisp) = 0 ;
+     // Operations : dispositions
+      virtual int  AddDisposition( const std::string& sName) = 0 ;
+     // Operations : machinings
+      virtual int  AddMachining( const std::string& sName, const std::string& sMachining) = 0 ;
+      virtual bool SetCurrMachining( int nId) = 0 ;
+      virtual bool ResetCurrMachining( void) = 0 ;
+      virtual int  GetCurrMachining( void) const = 0 ;
+      virtual bool SetMachiningParam( int nType, bool bVal) = 0 ;
+      virtual bool SetMachiningParam( int nType, int nVal) = 0 ;
+      virtual bool SetMachiningParam( int nType, double dVal) = 0 ;
+      virtual bool SetMachiningParam( int nType, const std::string& sVal) = 0 ;
+      virtual bool SetMachiningGeometry( const SELVECTOR& vIds) = 0 ;
+      virtual bool MachiningApply( void) = 0 ;
      // Simulation
       virtual bool SimStart( void) = 0 ;
       virtual bool SimMove( void) = 0 ;
diff --git a/EXeExecutor.h b/EXeExecutor.h
index 85716b6..7bc0574 100644
--- a/EXeExecutor.h
+++ b/EXeExecutor.h
@@ -530,6 +530,11 @@ EXE_EXPORT bool ExeTdbGetToolParam( const std::string& sName, int nType, int& nV
 EXE_EXPORT bool ExeTdbGetToolParam( const std::string& sName, int nType, double& dVal) ;
 EXE_EXPORT bool ExeTdbGetToolParam( const std::string& sName, int nType, std::string& sVal) ;
 EXE_EXPORT bool ExeTdbSave( void) ;
+// Operations
+EXE_EXPORT int  ExeGetFirstOperation( void) ;
+EXE_EXPORT int  ExeGetNextOperation( int nId) ;
+EXE_EXPORT int  ExeGetOperationType( int nId) ;
+EXE_EXPORT bool ExeRemoveAllOperations( void) ;
 // Machinings
 EXE_EXPORT int  ExeAddMachining( const std::string& sName, const std::string& sMachining) ;
 EXE_EXPORT bool ExeSetMachiningParam( int nType, bool bVal) ;
@@ -538,9 +543,6 @@ EXE_EXPORT bool ExeSetMachiningParam( int nType, double dVal) ;
 EXE_EXPORT bool ExeSetMachiningParam( int nType, const std::string& sVal) ;
 EXE_EXPORT bool ExeSetMachiningGeometry( const SELVECTOR& vIds) ;
 EXE_EXPORT bool ExeApplyMachining( void) ;
-EXE_EXPORT int  ExeGetFirstOperation( void) ;
-EXE_EXPORT int  ExeGetNextOperation( int nId) ;
-EXE_EXPORT int  ExeGetOperationType( int nId) ;
 // Simulation
 EXE_EXPORT bool ExeSimStart( void) ;
 EXE_EXPORT bool ExeSimMove( void) ;