Tags give the ability to mark specific points in history as being important
5.9.1+dfsg-5ubuntu1 artful; urgency=medium
5.9.0~beta.3+dfsg-1 experimental; urgency=medium
5.9.0~beta+dfsg-1 experimental; urgency=medium
5.7.1+dfsg-2ubuntu4~1 zesty; urgency=medium
5.7.1+dfsg-2ubuntu3~2 zesty; urgency=medium
5.7.1+dfsg-2ubuntu2~1 zesty; urgency=medium
5.7.1+dfsg-2ubuntu1~8 zesty; urgency=medium
5.3.2+dfsg-4+deb8u2 jessie; urgency=medium