diff --git a/ghc/docs/users_guide/2-10-notes.lit b/ghc/docs/users_guide/2-10-notes.lit
index 365946a6dbaa6dc93f55fbec112f0e80b7250818..e01969452d29c5c4630ceadf724df8b8a39b94c7 100644
--- a/ghc/docs/users_guide/2-10-notes.lit
+++ b/ghc/docs/users_guide/2-10-notes.lit
@@ -29,4 +29,7 @@ compiler to do with universal quantification so this actually works.
 binary distribution.  GHC binary distributions no longer contain
 Happy.  
 
+\item add some suffix rules for SGML, we can use SGML-Tools for
+documentation now.
+
 \end{itemize}