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diff --git a/externals/grill/flext/tutorial/adv3/main.cpp b/externals/grill/flext/tutorial/adv3/main.cpp
deleted file mode 100644
index 77f886d7..00000000
--- a/externals/grill/flext/tutorial/adv3/main.cpp
+++ /dev/null
@@ -1,153 +0,0 @@
-/* 
-flext tutorial - advanced 3
-
-Copyright (c) 2002-2006 Thomas Grill (gr@grrrr.org)
-For information on usage and redistribution, and for a DISCLAIMER OF ALL
-WARRANTIES, see the file, "license.txt," in this distribution.  
-
--------------------------------------------------------------------------
-
-This is a port of Iohannes Zmölnigs "counter" example to the flext paradigm.
-Find the original at http://iem.kug.ac.at/pd/externals-HOWTO/node5.html
-
-The functionality is exactly the same, with one exception:
-flext doesn't support default arguments, hence a message "bound 1" will translate into
-"bound 1 0" in the original example, but won't be recognized with flext.
-This can be easily circumvented by using a method digesting a variable argument list, but
-was omitted for the sake of clearness.
-
-Apart from that you'll notice several differences to the original C object:
-- with flext, callbacks have to be declared for all registered methods
-- Flext allows the full usage of integer types 
-- there are no real "passive" methods with flext. 
-	These can be emulated by methods, or more flexibly, attributes (see example "attr3")
-- Help symbols can't be defined that freely. This is because in Max/MSP help files always
-	have the name of the object with a suffix .help appended.
-	However with flext, a path to the respective help file may be specified
-*/
-
-// include flext header
-#include <flext.h>
-
-// check for appropriate flext version
-#if !defined(FLEXT_VERSION) || (FLEXT_VERSION < 501)
-#error You need at least flext version 0.5.1
-#endif
-
-class adv3:
-	public flext_base
-{
-	FLEXT_HEADER_S(adv3,flext_base,setup)
- 
-public:
-	// constructor with no arguments
-	adv3(int argc,t_atom *argv):
-		i_step(1)
-	{
-		// --- initialize bounds and step size ---
-		int f1 = 0,f2 = 0;
-		switch(argc) {
-			default:
-			case 3:
-				i_step = GetInt(argv[2]);
-			case 2:
-				f2 = GetInt(argv[1]);
-			case 1:
-				f1 = GetInt(argv[0]);
-			case 0:
-				;
-		}
-		if(argc < 2) f2 = f1;
-
-		m_bound(f1,f2);
-
-		i_count = i_down;
-
-		// --- define inlets and outlets ---
-		AddInAnything("bang, reset, etc."); // default inlet
-		AddInList("bounds (2 element list)");	// inlet for bounds
-		AddInInt("step size");		// inlet for step size
-
-		AddOutInt("counter");	// outlet for integer count
-		AddOutBang("overflow bang");	// outlet for bang
-	}
-
-protected:
-
-	void m_reset() 
-	{ 
-		i_count = i_down; 
-	}
-
-	void m_set(int argc,t_atom *argv) 
-	{ 
-		i_count = argc?GetAInt(argv[0]):0; 
-	}
-
-	void m_bang()
-	{
-		int f = i_count;
-		i_count += i_step;
-		if(i_down != i_up) {
-			if((i_step > 0) && (i_count > i_up)) {
-				i_count = i_down;
-				ToOutBang(1);
-			} 
-			else if(i_count < i_down) {
-				i_count = i_up;
-				ToOutBang(1);
-			}
-		}
-		ToOutInt(0,f);
-	}
-
-	void m_bound(int f1,int f2)
-	{
-		i_down = f1 < f2?f1:f2;
-		i_up   = f1 > f2?f1:f2;
-	}
-
-	void m_step(int s)
-	{
-		i_step = s;
-	}
-
-	int i_count,i_down,i_up,i_step;
-	
-private:
-
-	static void setup(t_classid c)
-	{
-		// --- set up methods (class scope) ---
-
-		// register a bang method to the default inlet (0)
-		FLEXT_CADDBANG(c,0,m_bang);
-
-		// set up tagged methods for the default inlet (0)
-		// the underscore _ after CADDMETHOD indicates that a message tag is used
-		// no, variable list or anything and all single arguments are recognized automatically, ...
-		FLEXT_CADDMETHOD_(c,0,"reset",m_reset);
-		FLEXT_CADDMETHOD_(c,0,"set",m_set);
-		// ..., more complex types (combinations of types) have to be specified explicitly
-		FLEXT_CADDMETHOD_II(c,0,"bound",m_bound);  // two int arguments
-
-		// set up methods for inlets 1 and 2
-		// no message tag used
-		FLEXT_CADDMETHOD(c,1,m_bound);  // variable arg type recognized automatically
-		FLEXT_CADDMETHOD(c,2,m_step);	// single int arg also recognized automatically
-	}
-
-	// for every registered method a callback has to be declared
-	FLEXT_CALLBACK(m_bang)
-	FLEXT_CALLBACK(m_reset)
-	FLEXT_CALLBACK_V(m_set)
-	FLEXT_CALLBACK_II(m_bound)
-	FLEXT_CALLBACK_I(m_step)
-};
-
-// instantiate the class (constructor has a variable argument list)
-// let "counter" be an alternative name
-// after the colon define the path/name of the help file (a path has a trailing /, a file has not)
-FLEXT_NEW_V("adv3 counter,help/",adv3)
-
-