diff --git a/doc/src/reference.xml b/doc/src/reference.xml
index ba5b1ead3..655e9e913 100644
--- a/doc/src/reference.xml
+++ b/doc/src/reference.xml
@@ -1160,6 +1160,55 @@ using msvc : &toolset_ops; ;
options depending on the value of theinstruction-set
feature.
+
+