Index: src/SynTree/BaseSyntaxNode.h
===================================================================
--- src/SynTree/BaseSyntaxNode.h	(revision 982832e24b58f99cf8d892fbb03bfd2c5cd57b15)
+++ src/SynTree/BaseSyntaxNode.h	(revision 29bc63e78d8dbc47b5c21992e7813b3f8d3dbba1)
@@ -26,4 +26,5 @@
 
 	virtual void accept( Visitor & v ) = 0;
+  virtual void print( std::ostream & os, int indent = 0 ) const = 0;
 };