Update schema USAGE permission description.

diff --git a/doc/src/sgml/ref/grant.sgml b/doc/src/sgml/ref/grant.sgml
index c3fb5f7a4c38cb10cd1f6789dece796fd829a840..8230f2078bf066f7b432ca77d60a57127743cbcf 100644 (file)
--- a/doc/src/sgml/ref/grant.sgml
+++ b/doc/src/sgml/ref/grant.sgml
@@ -1,5 +1,5 @@
 
 
@@ -275,7 +275,9 @@ GRANT role [, ...]
        For schemas, allows access to objects contained in the specified
        schema (assuming that the objects' own privilege requirements are
        also met).  Essentially this allows the grantee to look up
-       objects within the schema.
+       objects within the schema.  Without this permission, it is still
+       possible to see the object names by querying the system tables, but
+       they cannot be accessed via SQL.
       
       
        For sequences, this privilege allows the use of the