Add missing agg_type nonterminal description in new reference page.

diff --git a/doc/src/sgml/ref/security_label.sgml b/doc/src/sgml/ref/security_label.sgml
index 7fce58bc13afc2ef89986977fa7a0252b7eb59d0..4a3747ceec7119fb4eba019486e0798f9e3327ff 100644 (file)
--- a/doc/src/sgml/ref/security_label.sgml
+++ b/doc/src/sgml/ref/security_label.sgml
@@ -100,6 +100,17 @@ SECURITY LABEL [ FOR <replaceable class="PARAMETER">provider</replaceable> ] ON
     </listitem>
    </varlistentry>
 
+   <varlistentry>
+    <term><replaceable class="parameter">arg_type</replaceable></term>
+    <listitem>
+     <para>
+      An input data type on which the aggregate function operates.
+      To reference a zero-argument aggregate function, write <literal>*</>
+      in place of the list of input data types.
+     </para>
+    </listitem>
+   </varlistentry>
+
    <varlistentry>
     <term><replaceable class="parameter">argmode</replaceable></term>