How to raise a friendly message in pl/sql

[nir_s]

Hi guys,

One of ours programmers want to raise a friendly message in a procedure.

for example:
create or replace produre my_date
v_date date;
begin
select sysdate
into v_date
from dual;

if v_date < '01-jan-05'
then message('We are still in 2004');
end if;
end;
/

What should we use for raising this kind of message to the user in the application?

Thanks in advance,
Nir