diff --git a/EInAPI.h b/EInAPI.h
index f4c7f00..f8ab952 100644
--- a/EInAPI.h
+++ b/EInAPI.h
@@ -546,6 +546,8 @@ EIN_EXPORT BOOL __stdcall EgtVectorToIdGlob( double vtV[3], int nId) ;
 EIN_EXPORT BOOL __stdcall EgtVectorToIdLoc( double vtV[3], int nId) ;
 
 // Geo Transform
+EIN_EXPORT BOOL __stdcall EgtTransform( int nId, const double ptOrig[3],
+                                        const double vX[3], const double vY[3], const double vZ[3], int nRefType) ;
 EIN_EXPORT BOOL __stdcall EgtMove( int nId, double vVtMove[3], int nRefType) ;
 EIN_EXPORT BOOL __stdcall EgtRotate( int nId, double vPtAx[3], double vVtAx[3], double dAngRotDeg, int nRefType) ;
 EIN_EXPORT BOOL __stdcall EgtScale( int nId, const double vOrig[3],