All 4 segments change. Pretty dramatically. There would also be big differences in their motion if using a Flat or Rotated Shoulder Turn.
But he77 man, the language has changed again!. The anteroposterior axis is now a Z. Does make it easier.
Think I am drifting your way but it will take a little time. Need to incubate a few things.
Para un Campesino, este es muy muy, complicado!.
Hasta Luego!.
