Index: src/SynTree/TypeSubstitution.h
===================================================================
--- src/SynTree/TypeSubstitution.h	(revision d8ba08645e3a1d872799a07b1bf581390d8798ce)
+++ src/SynTree/TypeSubstitution.h	(revision 540de412b77591cc4fdbb16932060ef6229a3f1d)
@@ -10,5 +10,5 @@
 // Created On       : Mon May 18 07:44:20 2015
 // Last Modified By : Rob Schluntz
-// Last Modified On : Fri Apr 29 13:50:09 2016
+// Last Modified On : Fri Apr 29 15:00:20 2016
 // Update Count     : 2
 //
@@ -48,4 +48,5 @@
 	void add( FormalIterator formalBegin, FormalIterator formalEnd, ActualIterator actualBegin );
 
+	/// this function is unused...
 	template< typename TypeInstListIterator >
 	void extract( TypeInstListIterator begin, TypeInstListIterator end, TypeSubstitution &result );