Because of finite discretisation sometimes unrealistic results may be obtained (wiggles, etc.). If switch is set to -static, results are stabilized with a scheme which assumes that you are looking for the static (time independent) solution. If switch is set to -dynamic, results are stabilized with a scheme which assumes that you are looking for the dynamic (transient) solution. If switch is set to -no, no stabilization is used. Default switch is set to -static.
Warning: this default -static scheme may give bad results for transients calculations.