Reported-by: Erwin Brandstetter
<para>
A user can only revoke privileges that were granted directly by
that user. If, for example, user A has granted a privilege with
- grant option to user B, and user B has in turned granted it to user
+ grant option to user B, and user B has in turn granted it to user
C, then user A cannot revoke the privilege directly from C.
Instead, user A could revoke the grant option from user B and use
the <literal>CASCADE</literal> option so that the privilege is