Tags give the ability to mark specific points in history as being important
Debian release 2:10.0-12.1+squeeze1
Debian release 2:10.0-12+lenny1
Debian release 2:10.0-12+sparc64
Debian release 2:10.0-11.1+etch1
Debian release 2:10.0-8sarge3
Debian release 2:10.0-8sarge1
Debian release 2:10.0-8sarge2