foozy@708: $ \textbf{hg rollback}
foozy@708: rolling back last transaction
foozy@708: $ \textbf{hg tip}
foozy@708: changeset:   
foozy@708: tag:         tip
foozy@708: user:        Bryan O'Sullivan <bos@serpentine.com>
foozy@708: 
foozy@708: summary:     First commit
foozy@708: 
foozy@708: $ \textbf{hg status}
foozy@708: M a
foozy@708: ? b