diff --git a/EMkMachMgr.h b/EMkMachMgr.h
index 24e4d28..942390b 100644
--- a/EMkMachMgr.h
+++ b/EMkMachMgr.h
@@ -245,7 +245,7 @@ class __declspec( novtable) IMachMgr
       virtual bool GetNearestAngleInStroke( int nInd, double dAngRef, double& dAng) const = 0 ;
       virtual bool LimitAngleToStroke( int nInd, double& dAng) const = 0 ;
       virtual bool VerifyOutstroke( double dX, double dY, double dZ, double dAngA, double dAngB, int& nStat) = 0 ;
-      virtual const std::string& GetOutstrokeInfo( void) const = 0 ;
+      virtual std::string GetOutstrokeInfo( bool bMM = true) const = 0 ;
      // Machine
       virtual int  GetBaseId( const std::string& sBase) const = 0 ;
       virtual int  GetTableId( const std::string& sTable) const = 0 ;