diff --git a/doc/src/sgml/ref/grant.sgml b/doc/src/sgml/ref/grant.sgml
index 73f88e0..0e878ba 100644
--- a/doc/src/sgml/ref/grant.sgml
+++ b/doc/src/sgml/ref/grant.sgml
@@ -453,6 +453,22 @@ GRANT <replaceable class="PARAMETER">role_name</replaceable> [, ...] TO <replace
    </para>
 
    <para>
+    Further, roles having the <literal>INHERIT</literal> attribute
+    that are assigned to other roles in a hierarchical fashion are
+    additive of permission in the fashion of the
+    <database>database</><literal>.</><database>schema</><literal>.</><database>table</><literal>.</><database>column</>
+    hierarchy.  E.g. a user's login role can be assigned a role of
+    <literal>accountant</> which is in turn assigned a role of
+    <literal>employee</>.  The user would have the permissions of an
+    <literal>accountant</> and, by virtue of the role hierarchy, also
+    all permissions granted to <literal>employee</>s.  Unlike the
+    fixed
+    <database>database</><literal>.</><database>schema</><literal>.</><database>table</><literal>.</><database>column</>
+    hierarchy the <productname>PostgreSQL</> user is free to fashion
+    roles into arbitrary hierarchical structures.
+   </para>
+
+   <para>
     When a non-owner of an object attempts to <command>GRANT</> privileges
     on the object, the command will fail outright if the user has no
     privileges whatsoever on the object.  As long as some privilege is