Display Cursor Content - Help!

I wish to display the content of a cursor but haven't discovered the
trick. Here's what I'm doing:

--------------------------------------------------------- The function

CREATE OR REPLACE FUNCTION tmp.sps(character varying, date)
RETURNS refcursor AS
$BODY$
DECLARE
ref refcursor;
BEGIN
OPEN ref FOR select * from tmp.sps_measurement where logdate < $2;
RETURN ref;
END;
$BODY$
LANGUAGE 'plpgsql' VOLATILE;

----------------------------------------------------------- psql
script expected to display the contents of the cursor

BEGIN;

declare
ref cursor for select tmp.sps('=','2006-06-12') ;

FETCH all IN ref;
commit;

----------------------------------------------------------- Output:

xxx z=# \i sps_test.sql
BEGIN
DECLARE CURSOR
sps
--------------------
<unnamed portal 9>
(1 row)

(I am expecting the rows in the tmp.sps_measurement table.) Can anyone
help me out with this?

STEve
COMMIT
mdc_oz=#