Answer:
The option controls how new structural elements in the construction stages are applied to the already existing deformed structure.
Initial position:
The new elements are applied with the orientation to the initial position; that is, to the provided geometry. The deformations are compensated throughout the construction process. In theory, there is buckling in the geometry (Image 02 1.)
Tangential:
The new elements are applied with the orientation of the already existing deformed elements; that is, tangential to them. The deformations are not compensated throughout the construction process. In theory, there is no buckling in the geometry (Image 02 2.)
