diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml
index a14df06292..48d1c8d641 100644
--- a/doc/src/sgml/config.sgml
+++ b/doc/src/sgml/config.sgml
@@ -3468,6 +3468,16 @@ restore_command = 'copy "C:\\server\\archivedir\\%f" "%p"' # Windows
The precise stopping point is also influenced by
.
+
+
+ The value of this parameter is a time stamp in the same format
+ accepted by the timestamp with time zone data type,
+ except that you cannot use a time zone abbreviation (unless the
+ variable has been set
+ earlier in the configuration file). Preferred style is to use a
+ numeric offset from UTC, or you can write a full time zone name,
+ e.g. Europe/Helsinki not EEST.
+