diff --git a/doc/tribool.boostbook b/doc/tribool.boostbook
index aac7c7f..d3280fc 100644
--- a/doc/tribool.boostbook
+++ b/doc/tribool.boostbook
@@ -150,4 +150,18 @@ else {
+
+
+
+ Test all features of the
+ boost::tribool
+ class.
+
+
+
+ Test the use of the
+ BOOST_TRIBOOL_THIRD_STATE
+ macro.
+
+
\ No newline at end of file