diff --git a/EXE_GdbModifyCurve.cpp b/EXE_GdbModifyCurve.cpp
index e9c4bd6..7dcf41c 100644
--- a/EXE_GdbModifyCurve.cpp
+++ b/EXE_GdbModifyCurve.cpp
@@ -1541,47 +1541,6 @@ ExeAddCurveCompoCurve( int nId, int nAddCrvId, bool bEraseOrig, bool bEndVsStart
    return bOk ;
 }
 
-//-------------------------------------------------------------------------------
-bool
-ExeAddCurveCompoLineTg( int nId, double dLen, bool bEndVsStart)
-{
-   IGeomDB* pGeomDB = GetCurrGeomDB() ;
-   VERIFY_GEOMDB( pGeomDB, false)
-   bool bOk = true ;
-  // recupero la curva composita
-   ICurveComposite* pCompo = GetCurveComposite( pGeomDB->GetGeoObj( nId)) ;
-   bOk = bOk && ( pCompo != nullptr) ;
-  // calcolo punto di allungo
-   Point3d ptNew ;
-   if ( bEndVsStart) {
-      Point3d ptEnd ;
-      Vector3d vtEnd ;
-      bOk = bOk && pCompo->GetEndPoint( ptEnd) && pCompo->GetEndDir( vtEnd) ;
-      if ( bOk)
-         ptNew = ptEnd + vtEnd * dLen ;
-   }
-   else {
-      Point3d ptStart ;
-      Vector3d vtStart ;
-      bOk = bOk && pCompo->GetStartPoint( ptStart) && pCompo->GetStartDir( vtStart) ;
-      if ( bOk)
-         ptNew = ptStart - vtStart * dLen ;
-   }
-  // eseguo la modifica
-   bOk = bOk && pCompo->AddLine( ptNew, bEndVsStart) ;
-   ExeSetModified() ;
-  // se richiesto, salvo il comando Lua equivalente
-   if ( IsCmdLog()) {
-      string sLua = "EgtAddCurveCompoLineTg(" + ToString( nId) + ",{" +
-                                                ToString( dLen) + "}," +
-                                                ( bEndVsStart ? "true" : "false") + ")" +
-                    " -- Ok=" + ToString( bOk) ;
-      LOG_INFO( GetCmdLogger(), sLua.c_str()) ;
-   }
-  // restituisco il risultato
-   return bOk ;
-}
-
 //-------------------------------------------------------------------------------
 bool
 ExeAddCurveCompoLine( int nId, const Point3d& ptP, bool bEndVsStart, int nRefType)
@@ -1615,7 +1574,7 @@ ExeAddCurveCompoLine( int nId, const Point3d& ptP, bool bEndVsStart, int nRefTyp
 
 //-------------------------------------------------------------------------------
 bool
-ExeAddCurveCompoArcTg( int nId, const Point3d& ptP, bool bEndVsStart, int nRefType)
+ExeAddCurveCompoLineTg( int nId, double dLen, bool bEndVsStart)
 {
    IGeomDB* pGeomDB = GetCurrGeomDB() ;
    VERIFY_GEOMDB( pGeomDB, false)
@@ -1623,20 +1582,14 @@ ExeAddCurveCompoArcTg( int nId, const Point3d& ptP, bool bEndVsStart, int nRefTy
   // recupero la curva composita
    ICurveComposite* pCompo = GetCurveComposite( pGeomDB->GetGeoObj( nId)) ;
    bOk = bOk && ( pCompo != nullptr) ;
-  // recupero il riferimento locale
-   Frame3d frLoc ;
-   bOk = bOk && pGeomDB->GetGlobFrame( nId, frLoc) ;
-  // porto in locale il nuovo punto
-   Point3d ptPL = GetPointLocal( pGeomDB, ptP, nRefType, frLoc) ;
   // eseguo la modifica
-   bOk = bOk && pCompo->AddArcTg( ptPL, bEndVsStart) ;
+   bOk = bOk && pCompo->AddLineTg( dLen, bEndVsStart) ;
    ExeSetModified() ;
   // se richiesto, salvo il comando Lua equivalente
    if ( IsCmdLog()) {
-      string sLua = "EgtAddCurveCompoArcTg(" + ToString( nId) + ",{" +
-                                               ToString( ptP) + "}," +
-                                               ( bEndVsStart ? "true" : "false") + "," +
-                                               RefTypeToString( nRefType) + ")" +
+      string sLua = "EgtAddCurveCompoLineTg(" + ToString( nId) + ",{" +
+                                                ToString( dLen) + "}," +
+                                                ( bEndVsStart ? "true" : "false") + ")" +
                     " -- Ok=" + ToString( bOk) ;
       LOG_INFO( GetCmdLogger(), sLua.c_str()) ;
    }
@@ -1677,6 +1630,37 @@ ExeAddCurveCompoArc2P( int nId, const Point3d& ptMid, const Point3d& ptP, bool b
    return bOk ;
 }
 
+//-------------------------------------------------------------------------------
+bool
+ExeAddCurveCompoArcTg( int nId, const Point3d& ptP, bool bEndVsStart, int nRefType)
+{
+   IGeomDB* pGeomDB = GetCurrGeomDB() ;
+   VERIFY_GEOMDB( pGeomDB, false)
+   bool bOk = true ;
+  // recupero la curva composita
+   ICurveComposite* pCompo = GetCurveComposite( pGeomDB->GetGeoObj( nId)) ;
+   bOk = bOk && ( pCompo != nullptr) ;
+  // recupero il riferimento locale
+   Frame3d frLoc ;
+   bOk = bOk && pGeomDB->GetGlobFrame( nId, frLoc) ;
+  // porto in locale il nuovo punto
+   Point3d ptPL = GetPointLocal( pGeomDB, ptP, nRefType, frLoc) ;
+  // eseguo la modifica
+   bOk = bOk && pCompo->AddArcTg( ptPL, bEndVsStart) ;
+   ExeSetModified() ;
+  // se richiesto, salvo il comando Lua equivalente
+   if ( IsCmdLog()) {
+      string sLua = "EgtAddCurveCompoArcTg(" + ToString( nId) + ",{" +
+                                               ToString( ptP) + "}," +
+                                               ( bEndVsStart ? "true" : "false") + "," +
+                                               RefTypeToString( nRefType) + ")" +
+                    " -- Ok=" + ToString( bOk) ;
+      LOG_INFO( GetCmdLogger(), sLua.c_str()) ;
+   }
+  // restituisco il risultato
+   return bOk ;
+}
+
 //-------------------------------------------------------------------------------
 bool
 ExeRemoveCurveCompoCurve( int nId, bool bLast)
diff --git a/LUA_GdbModifyCurve.cpp b/LUA_GdbModifyCurve.cpp
index ddff33e..d741b1b 100644
--- a/LUA_GdbModifyCurve.cpp
+++ b/LUA_GdbModifyCurve.cpp
@@ -590,24 +590,6 @@ LuaAddCurveCompoCurve( lua_State* L)
    return 1 ;
 }
 
-//----------------------------------------------------------------------------
-static int
-LuaAddCurveCompoLineTg( lua_State* L)
-{
-  // 2 o 3 parametri : Id, dLen [, bEndVsStart]
-   int nId ;
-   LuaCheckParam( L, 1, nId)
-   double dLen ;
-   LuaCheckParam( L, 2, dLen)
-   bool bEndVsStart = true ;
-   LuaGetParam( L, 3, bEndVsStart) ;
-   LuaClearStack( L) ;
-  // aggiungo una linea in coda alla curva composita
-   bool bOk = ExeAddCurveCompoLineTg( nId, dLen, bEndVsStart) ;
-   LuaSetParam( L, bOk) ;
-   return 1 ;
-}
-
 //----------------------------------------------------------------------------
 static int
 LuaAddCurveCompoLine( lua_State* L)
@@ -632,22 +614,18 @@ LuaAddCurveCompoLine( lua_State* L)
 
 //----------------------------------------------------------------------------
 static int
-LuaAddCurveCompoArcTg( lua_State* L)
+LuaAddCurveCompoLineTg( lua_State* L)
 {
-  // 2, 3 o 4 parametri : Id, ptNew [, bEndVsStart] [, nRefType]
+  // 2 o 3 parametri : Id, dLen [, bEndVsStart]
    int nId ;
    LuaCheckParam( L, 1, nId)
-   Point3d ptNew ;
-   LuaCheckParam( L, 2, ptNew)
+   double dLen ;
+   LuaCheckParam( L, 2, dLen)
    bool bEndVsStart = true ;
-   int nRefType = RTY_DEFAULT ;
-   if ( LuaGetParam( L, 3, bEndVsStart))
-      LuaGetParam( L, 4, nRefType) ;
-   else
-      LuaGetParam( L, 3, nRefType) ;
+   LuaGetParam( L, 3, bEndVsStart) ;
    LuaClearStack( L) ;
-  // aggiungo un arco tangente in coda alla curva composita
-   bool bOk = ExeAddCurveCompoArcTg( nId, ptNew, bEndVsStart, nRefType) ;
+  // aggiungo una linea in coda alla curva composita
+   bool bOk = ExeAddCurveCompoLineTg( nId, dLen, bEndVsStart) ;
    LuaSetParam( L, bOk) ;
    return 1 ;
 }
@@ -676,6 +654,28 @@ LuaAddCurveCompoArc2P( lua_State* L)
    return 1 ;
 }
 
+//----------------------------------------------------------------------------
+static int
+LuaAddCurveCompoArcTg( lua_State* L)
+{
+  // 2, 3 o 4 parametri : Id, ptNew [, bEndVsStart] [, nRefType]
+   int nId ;
+   LuaCheckParam( L, 1, nId)
+   Point3d ptNew ;
+   LuaCheckParam( L, 2, ptNew)
+   bool bEndVsStart = true ;
+   int nRefType = RTY_DEFAULT ;
+   if ( LuaGetParam( L, 3, bEndVsStart))
+      LuaGetParam( L, 4, nRefType) ;
+   else
+      LuaGetParam( L, 3, nRefType) ;
+   LuaClearStack( L) ;
+  // aggiungo un arco tangente in coda alla curva composita
+   bool bOk = ExeAddCurveCompoArcTg( nId, ptNew, bEndVsStart, nRefType) ;
+   LuaSetParam( L, bOk) ;
+   return 1 ;
+}
+
 //----------------------------------------------------------------------------
 static int
 LuaRemoveCurveCompoCurve( lua_State* L)
@@ -927,10 +927,10 @@ LuaInstallGdbModifyCurve( LuaMgr& luaMgr)
    bOk = bOk && luaMgr.RegisterFunction( "EgtModifyArcByFlip", LuaModifyArcByFlip) ;
    bOk = bOk && luaMgr.RegisterFunction( "EgtCloseCurveCompo", LuaCloseCurveCompo) ;
    bOk = bOk && luaMgr.RegisterFunction( "EgtAddCurveCompoCurve", LuaAddCurveCompoCurve) ;
-   bOk = bOk && luaMgr.RegisterFunction( "EgtAddCurveCompoLineTg", LuaAddCurveCompoLineTg) ;
    bOk = bOk && luaMgr.RegisterFunction( "EgtAddCurveCompoLine", LuaAddCurveCompoLine) ;
-   bOk = bOk && luaMgr.RegisterFunction( "EgtAddCurveCompoArcTg", LuaAddCurveCompoArcTg) ;
+   bOk = bOk && luaMgr.RegisterFunction( "EgtAddCurveCompoLineTg", LuaAddCurveCompoLineTg) ;
    bOk = bOk && luaMgr.RegisterFunction( "EgtAddCurveCompoArc2P", LuaAddCurveCompoArc2P) ;
+   bOk = bOk && luaMgr.RegisterFunction( "EgtAddCurveCompoArcTg", LuaAddCurveCompoArcTg) ;
    bOk = bOk && luaMgr.RegisterFunction( "EgtRemoveCurveCompoCurve", LuaRemoveCurveCompoCurve) ;
    bOk = bOk && luaMgr.RegisterFunction( "EgtAddCurveCompoJoint", LuaAddCurveCompoJoint) ;
    bOk = bOk && luaMgr.RegisterFunction( "EgtModifyCurveCompoJoint", LuaModifyCurveCompoJoint) ;