Does "constraint" and "check" work in 6.3.2 ?

I am planning a new release to PgAccess (mainly bug fixes) and I'm
wondering if "constraint" and "check" are working !
I am using PostgreSQL 6.3.2 and this example from man create_table is
not working for me !

Please reply as soon as possible, so I could release this version prior
to 6.4 Pg release.

testdb=> create table emppay (name text not null, wage float4 default
10.00) constraint empcon check (wage > 5.30 and wage <= 30.00), check
(name <> '');
ERROR: parser: parse error at or near "constraint"

???!????

--
Constantin Teodorescu
FLEX Consulting Braila, ROMANIA