Sometimes you just need to quickly skim sample data from the database, but reading long data horizontally is a bit of a mess.
To read results vertically, toggle the expanded display mode using "\x".
content=# \x
Expanded display is on.
content=# select * from table_name;
-[ RECORD 1 ]-----------+-----------------------------
id | 8
when | 2010-03-02 13:37:33.64327+11
salutation | Mr
first_name | twig
address_street_number | 123
address_street_name | French Girl
address_suburb | Has A Reason
address_state | For Hurting Boyfriend
address_postcode | 1234
address_country | France
no_promotional_material | t
content=# \x
Expanded display is off.
In case you're wondering, the french girl reference is from a song called "The Presidents of USA - French Girl".