this script in program window:
set linesize 500
column my_col format a30 wrapped
select
'aaaaaaaaaaaaaaaaaaa'||chr(13)||chr(10)||
'bbbbbbbbbbbbbbbbbbb'||chr(13)||chr(10)||
'ccccccccccccccccccc' my_col
from dual;
produces output :
SQL>
MY_COL
------------------------------...