$ hg heads changeset: 3:f3e79edd2b05 tag: tip parent: 1:51969da8cdc5 user: Bryan O'Sullivan <bos@serpentine.com> date: Fri Jun 05 15:48:47 2009 +0000 summary: Ritira la seconda modifica. changeset: 2:629da9559a9e user: Bryan O'Sullivan <bos@serpentine.com> date: Fri Jun 05 15:48:46 2009 +0000 summary: Terza modifica.