diff --git a/EInAPI.h b/EInAPI.h
index 43eeeb1..898e5f7 100644
--- a/EInAPI.h
+++ b/EInAPI.h
@@ -475,10 +475,10 @@ EIN_EXPORT BOOL __stdcall EgtModifyArc3P( int nId, const double ptMid[3], int nR
 EIN_EXPORT BOOL __stdcall EgtModifyArcByFlip( int nId) ;
 EIN_EXPORT BOOL __stdcall EgtModifyArcToExplementary( int nId) ;
 EIN_EXPORT BOOL __stdcall EgtCloseCurveCompo( int nId) ;
-EIN_EXPORT BOOL __stdcall EgtAddCurveCompoCurve( int nId, int nAddCrvId, BOOL bEraseOrig) ;
-EIN_EXPORT BOOL __stdcall EgtAddCurveCompoLine( int nId, const double ptP[3], int nRefType) ;
-EIN_EXPORT BOOL __stdcall EgtAddCurveCompoArcTg( int nId, const double ptP[3], int nRefType) ;
-EIN_EXPORT BOOL __stdcall EgtAddCurveCompoArc2P( int nId, const double ptMid[3], const double ptP[3], int nRefType) ;
+EIN_EXPORT BOOL __stdcall EgtAddCurveCompoCurve( int nId, int nAddCrvId, BOOL bEraseOrig, BOOL bStartVsEnd) ;
+EIN_EXPORT BOOL __stdcall EgtAddCurveCompoLine( int nId, const double ptP[3], BOOL bStartVsEnd, int nRefType) ;
+EIN_EXPORT BOOL __stdcall EgtAddCurveCompoArcTg( int nId, const double ptP[3], BOOL bStartVsEnd, int nRefType) ;
+EIN_EXPORT BOOL __stdcall EgtAddCurveCompoArc2P( int nId, const double ptMid[3], const double ptP[3], BOOL bStartVsEnd, int nRefType) ;
 EIN_EXPORT BOOL __stdcall EgtRemoveCurveCompoCurve( int nId, BOOL bLast) ;
 EIN_EXPORT BOOL __stdcall EgtAddCurveCompoJoint( int nId, double dU) ;
 EIN_EXPORT BOOL __stdcall EgtModifyCurveCompoJoint( int nId, int nU, const double ptP[3], int nRefType) ;
diff --git a/EXeExecutor.h b/EXeExecutor.h
index b92b411..7e69525 100644
--- a/EXeExecutor.h
+++ b/EXeExecutor.h
@@ -514,10 +514,10 @@ EXE_EXPORT bool ExeModifyArc3P( int nId, const Point3d& ptMid, int nRefType) ;
 EXE_EXPORT bool ExeModifyArcToExplementary( int nId) ;
 EXE_EXPORT bool ExeModifyArcByFlip( int nId) ;
 EXE_EXPORT bool ExeCloseCurveCompo( int nId) ;
-EXE_EXPORT bool ExeAddCurveCompoCurve( int nId, int nAddCrvId, bool bEraseOrig) ;
-EXE_EXPORT bool ExeAddCurveCompoLine( int nId, const Point3d& ptP, int nRefType) ;
-EXE_EXPORT bool ExeAddCurveCompoArcTg( int nId, const Point3d& ptP, int nRefType) ;
-EXE_EXPORT bool ExeAddCurveCompoArc2P( int nId, const Point3d& ptMid, const Point3d& ptP, int nRefType) ;
+EXE_EXPORT bool ExeAddCurveCompoCurve( int nId, int nAddCrvId, bool bEraseOrig, bool bEndVsStart) ;
+EXE_EXPORT bool ExeAddCurveCompoLine( int nId, const Point3d& ptP, bool bEndVsStart, int nRefType) ;
+EXE_EXPORT bool ExeAddCurveCompoArcTg( int nId, const Point3d& ptP, bool bEndVsStart, int nRefType) ;
+EXE_EXPORT bool ExeAddCurveCompoArc2P( int nId, const Point3d& ptMid, const Point3d& ptP, bool bEndVsStart, int nRefType) ;
 EXE_EXPORT bool ExeRemoveCurveCompoCurve( int nId, bool bLast) ;
 EXE_EXPORT bool ExeAddCurveCompoJoint( int nId, double dU) ;
 EXE_EXPORT bool ExeModifyCurveCompoJoint( int nId, int nU, const Point3d& ptP, int nRefType) ;