[exim] Recipient equivalent of $sender_address

This might be a really dumb question... but is there a recipient equivalent of
$sender_address? $recipient_address seems the obvious choice, but it's not
mentioned in the spec.

$local_part_prefix$local_part$local_part_suffix@$domain, or maybe
$local_part@$domain, presumably expand to what I want, but either way it's a
bit of a mouthful.

--
Dave Evans
Power Internet

PGP key: http://powernet.co.uk/~davide/pgpkey