4.8.3.1 Version number
Versions are identified by unique version numbers. They
consist of two numbers separated by dots. Both numbers
must be between 0 and 32767.
- The main version number includes a position for (more
significant) version "jumps" -- before the dot -- and a
position for (less significant) version "steps" -- after the
dot.
Examples are 0.1, 3.11, 4.5, 8.1