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diff --git a/mgizapp/src/Array4.h b/mgizapp/src/Array4.h
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+/*
+
+Copyright (C) 2000,2001  Franz Josef Och (RWTH Aachen - Lehrstuhl fuer Informatik VI)
+
+This file is part of GIZA++ ( extension of GIZA ).
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
+
+This program is distributed in the hope that it will be useful, 
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 
+USA.
+
+*/
+#ifndef AlignmentArray4_h_DEFINED
+#define AlignmentArray4_h_DEFINED
+
+#include "Array2.h"
+template<class T> class Array4
+{
+ private:
+  Array2< Array2<T>* > A;
+  int M;
+  T init;
+ public:
+  Array4(int m,const T&_init)
+    : A(m,m,0),M(m),init(_init) {}
+  ~Array4()
+    {
+      for(int l=0;l<M;++l)
+	for(int m=0;m<M;++m)
+	  delete A(l,m);
+    }
+  const T&operator()(int i, int j, int l, int m)const
+    {
+      if( A(l,m)==0 )
+	return init;
+      else
+	return (*A(l,m))(i,j);
+    }
+  const T&get(int i, int j, int l, int m)const
+    {
+      if( A(l,m)==0 )
+	return init;
+      else
+	return (*A(l,m))(i,j);
+    }
+  T&operator()(int i, int j, int l, int m)
+    {
+      if( A(l,m)==0 )
+	{
+	  A(l,m)=new Array2<T>(max(l+1,m+1),max(l+1,m+1),init);
+	}
+      return (*A(l,m))(i,j);
+    }
+  void clear()
+    {
+      for(int l=0;l<M;++l)
+	for(int m=0;m<M;++m)
+	  if( A(l,m) )
+	    {
+	      Array2<T>&a=*A(l,m);
+	      for(int i=0;i<=l;++i)
+		for(int j=0;j<=m;++j)
+		  a(i,j)=0.0;
+	    }
+    }
+};
+
+#endif