New header meta proposal: 0 !BOM

[Philippe Hurbain]

Although I must admit I'm not certain the 'level' is really needed, what was your initial goal for that information Philo?

The idea was to set some usefulness degree, and let the user choose verbosity level of instructions. Axle annotation is almost mandatory, beams annotation is almost useless for shortest ones, useful for medium length, very useful for long ones. Problem is that I foresee endless discussions according to reviewers sensibility...

Seen from an instruction point of view there are currently two different ways to display the annotation:
- Number in a Circle: Axle Length
- Number in a Square: Beam Length and Type of Technic Panel.

So, should we also have a style parameter + enum (plain, circled, boxed)?