 Further extensions include RATTLE, WIGGLE, and MSHAKE.While RATTLE works the same way as SHAKE, yet using the Velocity Verlet time integration scheme, WIGGLE extends SHAKE and RATTLE by using an initial estimate for the Lagrange multipliers formula_16 based on the particle velocities.It is worth mentioning that MSHAKE computes corrections on the constraint "forces", achieving better convergence.