> If backwards incompatible changes are introduced you MUST append a hyphen and the reserved label "break". For instance: 2006.04.03.12 > 2006.04.03.12-break.

> If backwards incompatible changes are introduced you MUST append a hyphen and the reserved label "break". For instance: 2006.04.03.12 > 2006.04.03.12-break. So with this system if you want to know whether two versions are compatible you would need to check versions of all releases between them for not having that label...