WTF :confused:
Articulation is the flex available from both front and rear differential. Measured with one wheel compressed and the other extended (droop).
In the photo of the yellow beast above the front drivers side wheel is compressed as opposed to the front passenger side wheel which is extended, this is called flex.
The rear differential is also flexing, oposing the front differential. What you see there is flex/articulation.
If you are talking about the ability to self level the suspension at rest like when you had airbags fitted then I am sorry to tell you this, but there is no way to change the ride height of the springs to compensate for angles in the terrain.

