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 provider ] ON
     
    
 
+   
+    arg_type
+    
+     
+      An input data type on which the aggregate function operates.
+      To reference a zero-argument aggregate function, write *
+      in place of the list of input data types.
+     
+    
+   
+
    
     argmode