Further to Rich's comment...

The continuous support of the soil is modeled as discreet point supports in CAESAR II (CAESAR II).

Where bearing in imporant, these additional supports points must be added to the model. CAESAR II will add these extra nodes and supports around bends but it is up to the user to identify other regions where this is important, such as tees. I would also add extra support points where the pipe enters and exists the soil.

By clicking on From End or To End Mesh, you are telling CAESAR II to add these extra support points at the "from end" and/or "to end" of the pipe.