9.6.4 Version change type: major or minor
Each version has a change-type attribute indicating if the version contains major or minor changes. For translation management, a major change means the version contains changes which invalidate the translations based on it. So, changes which might seem minor, like changing the order of two bullets or making a particular word appear in bold, are in fact major if the change must also be performed in translated variants.
The major/minor distinction is, for translation management, only relevant for the reference language (or any other language to which synced-with pointers point).