[HB] Add hb_buffer_reverse()
diff --git a/src/hb-buffer.h b/src/hb-buffer.h
index 57f56bd..4240f6a 100644
--- a/src/hb-buffer.h
+++ b/src/hb-buffer.h
@@ -99,6 +99,11 @@
 hb_buffer_ensure (hb_buffer_t  *buffer,
 		  unsigned int  size);
 
+void
+hb_buffer_reverse (hb_buffer_t *buffer);
+
+
+/* Filling the buffer in */
 
 void
 hb_buffer_add_glyph (hb_buffer_t    *buffer,
@@ -107,6 +112,8 @@
 		     unsigned int    cluster);
 
 
+/* Getting glyphs out of the buffer */
+
 /* Return value valid as long as buffer not modified */
 unsigned int
 hb_buffer_get_len (hb_buffer_t *buffer);