[newbie] Un-tar?

[Arcana]

        I have an archive that is tar-ed.  I have no idea how to open the
archive.

        I'd appreciate if someone would post the command line to extract an
archive.  I can't decipher it from the MAN page.
-- 
/-|rcana
----- ----- * ----- -----
Pern - Araby Weyr:   http://members.tripod.com/~Araby/
FF7 - Tales of Midgar: http://members.tripod.com/~ArcanaTxM/
Xenogears - DeM: http://members.tripod.com/~project_xat/
Xenogears - Guardian Angels: http://guardian.zenogias.com/