diff --git a/Packages/Interval_arithmetic/changes.txt b/Packages/Interval_arithmetic/changes.txt
index d11666ed0db..31217ab3506 100644
--- a/Packages/Interval_arithmetic/changes.txt
+++ b/Packages/Interval_arithmetic/changes.txt
@@ -1,5 +1,9 @@
 Changes done to the Interval Arithmetic package.
 
+Version 4.48 on ?? June 2000
+- Removed obsolete (and buggy) references to
+  CGAL_CFG_NO_EXPLICIT_TEMPLATE_FUNCTION_ARGUMENT_SPECIFICATION.
+
 Version 4.47 on 13 June 2000
 - Removed useless "template <>" before full specializations of function
   templates.
diff --git a/Packages/Interval_arithmetic/include/CGAL/Arithmetic_filter.h b/Packages/Interval_arithmetic/include/CGAL/Arithmetic_filter.h
index 319171156ec..d7372b2fc33 100644
--- a/Packages/Interval_arithmetic/include/CGAL/Arithmetic_filter.h
+++ b/Packages/Interval_arithmetic/include/CGAL/Arithmetic_filter.h
@@ -78,12 +78,11 @@ class Filtered_exact
   { return inter; }
   IA give_interval (const No_Filter_Cache &) const
   {
-#if !defined(CGAL_CFG_NO_EXPLICIT_TEMPLATE_FUNCTION_ARGUMENT_SPECIFICATION) \
- && !defined(CGAL_CFG_NO_PARTIAL_CLASS_TEMPLATE_SPECIALISATION)
+#ifndef CGAL_CFG_NO_PARTIAL_TEMPLATE_FUNCTION_ARGUMENT_SPECIFICATION
     return convert_to<Interval_nt_advanced>(_value);
 #else
     return convert_from_to(Interval_nt_advanced(), _value);
-#endif // CGAL_CFG_NO_EXPLICIT_TEMPLATE_FUNCTION_ARGUMENT_SPECIFICATION
+#endif // CGAL_CFG_NO_PARTIAL_TEMPLATE_FUNCTION_ARGUMENT_SPECIFICATION
   }
 
   void compute_cache (const No_Filter_Cache &) const
@@ -114,12 +113,11 @@ public:
   IA interval() const { return give_interval(_cache); }
   ET exact()    const
   {
-#if !defined(CGAL_CFG_NO_EXPLICIT_TEMPLATE_FUNCTION_ARGUMENT_SPECIFICATION) \
- && !defined(CGAL_CFG_NO_PARTIAL_CLASS_TEMPLATE_SPECIALISATION)
+#ifndef CGAL_CFG_NO_PARTIAL_TEMPLATE_FUNCTION_ARGUMENT_SPECIFICATION
     return convert_to<ET>(_value);
 #else
     return convert_from_to(ET(), _value);
-#endif // CGAL_CFG_NO_EXPLICIT_TEMPLATE_FUNCTION_ARGUMENT_SPECIFICATION
+#endif // CGAL_CFG_NO_PARTIAL_TEMPLATE_FUNCTION_ARGUMENT_SPECIFICATION
   }
   double to_double() const { return to_double(_value); }
   Restricted_double dbl() const { return Restricted_double(to_double()); }
diff --git a/Packages/Interval_arithmetic/include/CGAL/Interval_arithmetic/IA_Fixed.h b/Packages/Interval_arithmetic/include/CGAL/Interval_arithmetic/IA_Fixed.h
index da39d62c595..6f17c530c16 100644
--- a/Packages/Interval_arithmetic/include/CGAL/Interval_arithmetic/IA_Fixed.h
+++ b/Packages/Interval_arithmetic/include/CGAL/Interval_arithmetic/IA_Fixed.h
@@ -25,7 +25,7 @@
 
 CGAL_BEGIN_NAMESPACE
 
-// The Fixed is in fact a float => trivial conversion.
+// Fixed is in fact a float => trivial conversion.
 
 inline
 Interval_nt_advanced
@@ -34,16 +34,13 @@ convert_from_to (const Interval_nt_advanced&, const Fixed_precision_nt & z)
     return to_double(z);
 }
 
-#ifndef CGAL_CFG_NO_EXPLICIT_TEMPLATE_FUNCTION_ARGUMENT_SPECIFICATION
 template <>
 struct converter<Interval_nt_advanced,Fixed_precision_nt>
 {
     static inline Interval_nt_advanced do_it (const Fixed_precision_nt & z)
     { return to_double(z); }
 };
-#endif // CGAL_CFG_NO_EXPLICIT_TEMPLATE_FUNCTION_ARGUMENT_SPECIFICATION
-
 
 CGAL_END_NAMESPACE
 
-#endif	 // CGAL_IA_FIXED_H
+#endif // CGAL_IA_FIXED_H
diff --git a/Packages/Interval_arithmetic/include/CGAL/Interval_arithmetic/IA_Gmpz.h b/Packages/Interval_arithmetic/include/CGAL/Interval_arithmetic/IA_Gmpz.h
index a03919a57fd..a3b5a533576 100644
--- a/Packages/Interval_arithmetic/include/CGAL/Interval_arithmetic/IA_Gmpz.h
+++ b/Packages/Interval_arithmetic/include/CGAL/Interval_arithmetic/IA_Gmpz.h
@@ -50,7 +50,6 @@ convert_from_to (const Interval_nt_advanced&, const Gmpz & z)
 	return result;
 }
 
-#ifndef CGAL_CFG_NO_EXPLICIT_TEMPLATE_FUNCTION_ARGUMENT_SPECIFICATION
 template <>
 struct converter<Interval_nt_advanced,Gmpz>
 {
@@ -59,8 +58,6 @@ struct converter<Interval_nt_advanced,Gmpz>
 	return convert_from_to(Interval_nt_advanced(), z);
     }
 };
-#endif // CGAL_CFG_NO_EXPLICIT_TEMPLATE_FUNCTION_ARGUMENT_SPECIFICATION
-
 
 // Now we also have an exact converter from double to Quotient<Gmpz>, so that
 // Filtered_exact<double, Quotient<Gmpz> > is useful.
@@ -82,14 +79,12 @@ convert_from_to (const Quotient<Gmpz>&, const double& d)
   return Quotient<Gmpz>(Gmpz(num), Gmpz(den));
 }
 
-#ifndef CGAL_CFG_NO_EXPLICIT_TEMPLATE_FUNCTION_ARGUMENT_SPECIFICATION
 template <>
 struct converter<Quotient<Gmpz>,double>
 {
   static inline Quotient<Gmpz> do_it (const double & z)
   { return convert_from_to(Quotient<Gmpz>(), z); }
 };
-#endif // CGAL_CFG_NO_EXPLICIT_TEMPLATE_FUNCTION_ARGUMENT_SPECIFICATION
 
 CGAL_END_NAMESPACE
 
diff --git a/Packages/Interval_arithmetic/include/CGAL/Interval_arithmetic/IA_Lazy_exact_nt.h b/Packages/Interval_arithmetic/include/CGAL/Interval_arithmetic/IA_Lazy_exact_nt.h
index 6d9c8d4dd11..4cc5a636dd8 100644
--- a/Packages/Interval_arithmetic/include/CGAL/Interval_arithmetic/IA_Lazy_exact_nt.h
+++ b/Packages/Interval_arithmetic/include/CGAL/Interval_arithmetic/IA_Lazy_exact_nt.h
@@ -31,11 +31,10 @@ Interval_nt_advanced
 convert_from_to (const Interval_nt_advanced&, const Lazy_exact_nt<RT> & z)
 {
 	CGAL_expensive_assertion(FPU_empiric_test() == CGAL_FE_UPWARD);
-	return  z.approx_adv();
+	return z.approx_adv();
 }
 
-#if !defined(CGAL_CFG_NO_EXPLICIT_TEMPLATE_FUNCTION_ARGUMENT_SPECIFICATION) \
- && !defined(CGAL_CFG_NO_PARTIAL_CLASS_TEMPLATE_SPECIALISATION)
+#ifndef CGAL_CFG_NO_PARTIAL_CLASS_TEMPLATE_SPECIALISATION
 template <class RT>
 struct converter<Interval_nt_advanced, Lazy_exact_nt<RT> >
 {
@@ -44,8 +43,8 @@ struct converter<Interval_nt_advanced, Lazy_exact_nt<RT> >
 	return convert_from_to(Interval_nt_advanced(), z);
     }
 };
-#endif // CGAL_CFG_NO_EXPLICIT_TEMPLATE_FUNCTION_ARGUMENT_SPECIFICATION
+#endif // CGAL_CFG_NO_PARTIAL_CLASS_TEMPLATE_SPECIALISATION
 
 CGAL_END_NAMESPACE
 
-#endif	 // CGAL_IA_LAZY_EXACT_NT_H
+#endif // CGAL_IA_LAZY_EXACT_NT_H
diff --git a/Packages/Interval_arithmetic/include/CGAL/Interval_arithmetic/IA_Quotient.h b/Packages/Interval_arithmetic/include/CGAL/Interval_arithmetic/IA_Quotient.h
index aeeb4acaab0..1a7fb0b3b28 100644
--- a/Packages/Interval_arithmetic/include/CGAL/Interval_arithmetic/IA_Quotient.h
+++ b/Packages/Interval_arithmetic/include/CGAL/Interval_arithmetic/IA_Quotient.h
@@ -38,8 +38,7 @@ convert_from_to (const Interval_nt_advanced&, const Quotient<RT> & z)
 		convert_from_to(Interval_nt_advanced(), z.denominator());
 }
 
-#if !defined(CGAL_CFG_NO_EXPLICIT_TEMPLATE_FUNCTION_ARGUMENT_SPECIFICATION) \
- && !defined(CGAL_CFG_NO_PARTIAL_CLASS_TEMPLATE_SPECIALISATION)
+#ifndef CGAL_CFG_NO_PARTIAL_CLASS_TEMPLATE_SPECIALISATION
 template <class RT>
 struct converter<Interval_nt_advanced,Quotient<RT> >
 {
@@ -48,8 +47,8 @@ struct converter<Interval_nt_advanced,Quotient<RT> >
 	return convert_from_to(Interval_nt_advanced(), z);
     }
 };
-#endif // CGAL_CFG_NO_EXPLICIT_TEMPLATE_FUNCTION_ARGUMENT_SPECIFICATION
+#endif // CGAL_CFG_NO_PARTIAL_CLASS_TEMPLATE_SPECIALISATION
 
 CGAL_END_NAMESPACE
 
-#endif	 // CGAL_IA_QUOTIENT_H
+#endif // CGAL_IA_QUOTIENT_H
diff --git a/Packages/Interval_arithmetic/include/CGAL/Interval_arithmetic/IA_leda_bigfloat.h b/Packages/Interval_arithmetic/include/CGAL/Interval_arithmetic/IA_leda_bigfloat.h
index 2f209b9d542..016f63d8493 100644
--- a/Packages/Interval_arithmetic/include/CGAL/Interval_arithmetic/IA_leda_bigfloat.h
+++ b/Packages/Interval_arithmetic/include/CGAL/Interval_arithmetic/IA_leda_bigfloat.h
@@ -45,7 +45,6 @@ convert_from_to (const Interval_nt_advanced&, const leda_bigfloat & z)
 	return result;
 }
 
-#ifndef CGAL_CFG_NO_EXPLICIT_TEMPLATE_FUNCTION_ARGUMENT_SPECIFICATION
 template <>
 struct converter<Interval_nt_advanced,leda_bigfloat>
 {
@@ -54,8 +53,7 @@ struct converter<Interval_nt_advanced,leda_bigfloat>
 	return convert_from_to(Interval_nt_advanced(), z);
     }
 };
-#endif // CGAL_CFG_NO_EXPLICIT_TEMPLATE_FUNCTION_ARGUMENT_SPECIFICATION
 
 CGAL_END_NAMESPACE
 
-#endif	 // CGAL_IA_LEDA_BIGFLOAT_H
+#endif // CGAL_IA_LEDA_BIGFLOAT_H
diff --git a/Packages/Interval_arithmetic/include/CGAL/Interval_arithmetic/IA_leda_integer.h b/Packages/Interval_arithmetic/include/CGAL/Interval_arithmetic/IA_leda_integer.h
index 5136fa5aa4b..8623364435b 100644
--- a/Packages/Interval_arithmetic/include/CGAL/Interval_arithmetic/IA_leda_integer.h
+++ b/Packages/Interval_arithmetic/include/CGAL/Interval_arithmetic/IA_leda_integer.h
@@ -47,7 +47,6 @@ convert_from_to (const Interval_nt_advanced&, const leda_integer & z)
     return result;
 }
 
-#ifndef CGAL_CFG_NO_EXPLICIT_TEMPLATE_FUNCTION_ARGUMENT_SPECIFICATION
 template <>
 struct converter<Interval_nt_advanced,leda_integer>
 {
@@ -56,8 +55,7 @@ struct converter<Interval_nt_advanced,leda_integer>
 	return convert_from_to(Interval_nt_advanced(), z);
     }
 };
-#endif // CGAL_CFG_NO_EXPLICIT_TEMPLATE_FUNCTION_ARGUMENT_SPECIFICATION
 
 CGAL_END_NAMESPACE
 
-#endif	 // CGAL_IA_LEDA_INTEGER_H
+#endif // CGAL_IA_LEDA_INTEGER_H
diff --git a/Packages/Interval_arithmetic/include/CGAL/Interval_arithmetic/IA_leda_rational.h b/Packages/Interval_arithmetic/include/CGAL/Interval_arithmetic/IA_leda_rational.h
index 3d640ca78f9..802ca639635 100644
--- a/Packages/Interval_arithmetic/include/CGAL/Interval_arithmetic/IA_leda_rational.h
+++ b/Packages/Interval_arithmetic/include/CGAL/Interval_arithmetic/IA_leda_rational.h
@@ -49,7 +49,6 @@ convert_from_to (const Interval_nt_advanced&, const leda_rational & z)
     return result;
 }
 
-#ifndef CGAL_CFG_NO_EXPLICIT_TEMPLATE_FUNCTION_ARGUMENT_SPECIFICATION
 template <>
 struct converter<Interval_nt_advanced,leda_rational>
 {
@@ -58,8 +57,7 @@ struct converter<Interval_nt_advanced,leda_rational>
 	return convert_from_to(Interval_nt_advanced(), z);
     }
 };
-#endif // CGAL_CFG_NO_EXPLICIT_TEMPLATE_FUNCTION_ARGUMENT_SPECIFICATION
 
 CGAL_END_NAMESPACE
 
-#endif	 // CGAL_IA_LEDA_RATIONAL_H
+#endif // CGAL_IA_LEDA_RATIONAL_H
diff --git a/Packages/Interval_arithmetic/include/CGAL/Interval_arithmetic/IA_leda_real.h b/Packages/Interval_arithmetic/include/CGAL/Interval_arithmetic/IA_leda_real.h
index e6c91c62958..a0febc63fcd 100644
--- a/Packages/Interval_arithmetic/include/CGAL/Interval_arithmetic/IA_leda_real.h
+++ b/Packages/Interval_arithmetic/include/CGAL/Interval_arithmetic/IA_leda_real.h
@@ -43,7 +43,6 @@ convert_from_to (const Interval_nt_advanced&, const leda_real & z)
     return result;
 }
 
-#ifndef CGAL_CFG_NO_EXPLICIT_TEMPLATE_FUNCTION_ARGUMENT_SPECIFICATION
 template <>
 struct converter<Interval_nt_advanced,leda_real>
 {
@@ -52,8 +51,7 @@ struct converter<Interval_nt_advanced,leda_real>
 	return convert_from_to(Interval_nt_advanced(), z);
     }
 };
-#endif // CGAL_CFG_NO_EXPLICIT_TEMPLATE_FUNCTION_ARGUMENT_SPECIFICATION
 
 CGAL_END_NAMESPACE
 
-#endif	 // CGAL_IA_LEDA_REAL_H
+#endif // CGAL_IA_LEDA_REAL_H
diff --git a/Packages/Interval_arithmetic/include/CGAL/Lazy_exact_nt.h b/Packages/Interval_arithmetic/include/CGAL/Lazy_exact_nt.h
index d1d8fbcd33d..3bcba6f3152 100644
--- a/Packages/Interval_arithmetic/include/CGAL/Lazy_exact_nt.h
+++ b/Packages/Interval_arithmetic/include/CGAL/Lazy_exact_nt.h
@@ -492,8 +492,7 @@ Number_tag
 number_type_tag (const Lazy_exact_nt<ET>&)
 { return Number_tag(); }
 
-#if !defined(CGAL_CFG_NO_EXPLICIT_TEMPLATE_FUNCTION_ARGUMENT_SPECIFICATION) \
- && !defined(CGAL_CFG_NO_PARTIAL_CLASS_TEMPLATE_SPECIALISATION)
+#ifndef CGAL_CFG_NO_PARTIAL_CLASS_TEMPLATE_SPECIALISATION
 template <typename ET>
 struct converter<ET, Lazy_exact_nt<ET> >
 {