diff --git a/doc/src/sgml/ref/create_trigger.sgml b/doc/src/sgml/ref/create_trigger.sgml
index 303881fcfbb..289dd1d9da8 100644
--- a/doc/src/sgml/ref/create_trigger.sgml
+++ b/doc/src/sgml/ref/create_trigger.sgml
@@ -457,6 +457,12 @@ UPDATE OF column_name1 [, column_name2
value did not change.
+
+ There are a few built-in trigger functions that can be used to
+ solve common problems without having to write your own trigger code;
+ see .
+
+
In a BEFORE trigger, the WHEN condition is
evaluated just before the function is or would be executed, so using