foozy@708: $ \textbf{echo third change >> myfile}
foozy@708: $ \textbf{hg commit -m 'third change'}
foozy@708: $ \textbf{hg backout -m 'back out second change' 1}
foozy@708: reverting myfile
foozy@708: changeset  backs out changeset 
foozy@708: the backout changeset is a new head - do not forget to merge
foozy@708: (use "backout --merge" if you want to auto-merge)