Question about Install doc's

<bigger>  In the Install file that comes with version 6.4.2, step number
18 says the following:


            b. Several regression tests could failed if the

              user's locale collation scheme is different

              from that of standard C locale.

              If you configure and compile Postgres with

              the --enable-locale option then set locale

              environment to C (or unset all LC_*

              variables) by putting these additional lines

              to your login environment before starting

              postmaster:

              LC_COLLATE=C

              LC_CTYPE=C

              LC_COLLATE=C

              export LC_COLLATE LC_CTYPE LC_COLLATE

</bigger>


   Why does it say to set LC_COLLATE twice?  Does anyone know if the
second LC_COLLATE=C should be something else or does it really mean to
set only two variables?