* and a '''Revision''' (forth) number.
The major Major and minor numbers ..... ???correlate to strategic and technical milestones and might not change rapidly.
New features correlate to a A new (increased) version numberindicates new features, whereas the revision number relates to Hot- and Bugfixes within a certain Version. Therefore, these last two numbers will change more frequently due to the meaning.
For example the {{UBIK}} Version 2.4.4.1, which is major 2, minor 4, version 4 and revision 1, implements additional features if compared the {{UBIK}} Version 2.4.3.1.