return two elements

Hello,

how can I write a function that return two or more elements?
I try to return a record but after I don't know how to assign returned value to a variable. For example,

CREATE OR REPLACE FUNCTION test1() RETURNS record AS '
declare
        rec record;
begin
        select into rec \'01/01/2005\'::Date as dt_inici, \'02/02/2005\'::Date as dt_fi;
        return rec;
end; '
LANGUAGE 'plpgsql' VOLATILE;

CREATE OR REPLACE FUNCTION test2() RETURNS date AS '
declare
        rec record;
begin
        -- rec := test1();                      << ERROR:  syntax error at or near "rec"
        select into rec test1();
        return rec.dt_inici;            <<  ERROR: record "rec" has no field "dt_inici"
end; '
LANGUAGE 'plpgsql' VOLATILE;

Can I return an array?, and how I take returned array?
I search postgres documentation but I don't find it

Thanks in advance,

pere