This option implements the BYPASS procedure as described in
P. van der Sluis & A.L. Spek, Acta Cryst. A46, (1990), 194.
The calculations involve an inner and an outer loop. The inner loop is called SQUEEZE. The contribution of the disordered solvent to the structure factors is determined through difference map iteration based on fixed coordinates of the ordered part of the structure. The outer loop involves a SHELXL2014 refinement of the ordered model parameters while treating the disordered solvent as a fixed contribution in the structure factor calculation.