bos@144: $ \textbf{hg update 2}
bos@144: 2 files updated, 0 files merged, 0 files removed, 0 files unresolved
bos@144: $ \textbf{hg parents}
bos@144: changeset:   
bos@144: user:        Bryan O'Sullivan <bos@serpentine.com>
bos@144: 
bos@144: summary:     Introduce a typo into hello.c.
bos@144: 
bos@144: $ \textbf{hg update}
bos@144: 2 files updated, 0 files merged, 0 files removed, 0 files unresolved