Writing plpgsql not in a function (directly from plsql)? - Mailing list pgsql-novice

Is it possible to write plpgsq from psql? I don't want to write a
function just to write a little script, for example, I'd like to write
something like:

begin;
if 1 > 3 then
   raise notice 'Hi';
end if;
commit;

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