Index: src/SynTree/BaseSyntaxNode.h
===================================================================
--- src/SynTree/BaseSyntaxNode.h	(revision 982832e24b58f99cf8d892fbb03bfd2c5cd57b15)
+++ src/SynTree/BaseSyntaxNode.h	(revision aec3e6ba1aee4b0e673a263958d6457b5bf6f684)
@@ -26,4 +26,5 @@
 
 	virtual void accept( Visitor & v ) = 0;
+  virtual void print( std::ostream & os, int indent = 0 ) const = 0;
 };