diff --git a/vcg/simplex/face/base.h b/vcg/simplex/face/base.h
index a328f5f4..fc1b1729 100644
--- a/vcg/simplex/face/base.h
+++ b/vcg/simplex/face/base.h
@@ -194,7 +194,14 @@ public:
   void SetB(int i)		{this->Flags() |=(BORDER0<<i);}
 	/// This funcion execute the inverse operation of SetS()
 	void ClearB(int i)	{this->Flags() &= (~(BORDER0<<i));}
-	
+
+	/// This function checks if the face is selected
+	bool IsCrease(int i) const {return (this->Flags() & (CREASE0<<i)) != 0;}
+	/// This function select the face
+	void SetCrease(int i){this->Flags() |=(CREASE0<<i);}
+	/// This funcion execute the inverse operation of SetS()
+	void ClearCrease(int i)	{this->Flags() &= (~(CREASE0<<i));}
+
 	/// This function checks if a given side of the face is a feature/internal edge
 	/// it is used by some importer to mark internal 
 	/// edges of polygonal faces that have been triangulated