diff --git a/ENsAutoNester.h b/ENsAutoNester.h
index b3de88b..dc4717e 100644
--- a/ENsAutoNester.h
+++ b/ENsAutoNester.h
@@ -43,8 +43,9 @@ class __declspec( novtable) IAutoNester
    public :
       virtual ~IAutoNester( void) {} 
       virtual bool Start( void) = 0 ;
-      virtual bool AddSheet( int nSheetId, const PolyArc& Outline, int nPriority, int nCount) = 0 ;
-      virtual bool AddPart( int nPartId, const PolyArc& Outline, bool bCanFlip, bool bCanRotate, int nPriority, int nCount) = 0 ;
+      virtual bool AddSheet( int nSheetId, const PolyArc& Outline, double dKerf, int nPriority, int nCount) = 0 ;
+      virtual bool AddPart( int nPartId, const PolyArc& Outline, const PolyArc& ToolOutline,
+                            bool bCanFlip, bool bCanRotate, double dRotStep, int nPriority, int nCount) = 0 ;
       virtual bool SetInterpartGap( double dGap) = 0 ;
       virtual bool Compute( int nMaxTime) = 0 ;
       virtual bool CancelComputation( void) = 0 ;
diff --git a/EXeExecutor.h b/EXeExecutor.h
index 6c6cb39..77a931d 100644
--- a/EXeExecutor.h
+++ b/EXeExecutor.h
@@ -677,7 +677,8 @@ EXE_EXPORT int  ExeVerifyCutAsSplitting( int nMchId) ;
 // AutoNesting
 EXE_EXPORT bool ExeAutoNestStart( void) ;
 EXE_EXPORT bool ExeAutoNestAddSheet( int nSheetId, int nOutlineId, double dKerf, int nPriority, int nCount) ;
-EXE_EXPORT bool ExeAutoNestAddPart( int nPartId, int nOutlineId, bool bCanFlip, bool bCanRotate, int nPriority, int nCount) ;
+EXE_EXPORT bool ExeAutoNestAddPart( int nPartId, int nOutlineId, int nToolOutlineId,
+                                    bool bCanFlip, bool bCanRotate, double dRotStep, int nPriority, int nCount) ;
 EXE_EXPORT bool ExeAutoNestSetInterpartGap( double dGap) ;
 EXE_EXPORT bool ExeAutoNestCompute( int nMaxTime) ;
 EXE_EXPORT bool ExeAutoNestCancelComputation( void) ;