Current
1. 1.1. 1.1.1 1.1.1.1 1.1.2 1.1.3 1.1.3.1 1.1.3.1.1 1.1.3.1.1.1 1.1.3.1.1.2
Was easy to implement. Looks natural form small technologies with multiple splits.
However large technologies which are mostly sequential look bad in this scheme.
For example:
1 1.1 1.1.1 1.1.1.1 1.1.1.1.1 ... 1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1