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Short helpfile for action MFILTER_LESS
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The following arguments are compulsory: 

                   DATA - The multicolvar that calculates the set of base quantities 
                          that we are interested in 
                     NN - ( default=6 ) The n parameter of the switching function 
                     MM - ( default=0 ) The m parameter of the switching function 
                    D_0 - ( default=0.0 ) The d_0 parameter of the switching function 
                    R_0 - The r_0 parameter of the switching function 

In addition you may use the following options: 

  NUMERICAL_DERIVATIVES - ( default=off ) calculate the derivatives for these 
                          quantities numerically 
                  NOPBC - ( default=off ) ignore the periodic boundary conditions 
                          when calculating distances 
                 SERIAL - ( default=off ) do the calculation in serial. Do not use 
                          MPI 
                 LOWMEM - ( default=off ) lower the memory requirements 
                TIMINGS - ( default=off ) output information on the timings of the 
                          various parts of the calculation 
                  VMEAN - calculate the norm of the mean vector. The final value can 
                          be referenced using <em>label</em>.vmean. You can use multiple 
                          instances of this keyword i.e. VMEAN1, VMEAN2, VMEAN3... The 
                          corresponding values are then referenced using <em>label</em>.vmean-1, 
                          <em>label</em>.vmean-2, <em>label</em>.vmean-3... 
                   MEAN - take the mean of these variables. The final value can be 
                          referenced using <em>label</em>.mean. You can use multiple instances 
                          of this keyword i.e. MEAN1, MEAN2, MEAN3... The corresponding 
                          values are then referenced using <em>label</em>.mean-1, 
                          <em>label</em>.mean-2, <em>label</em>.mean-3... 
                MOMENTS - calculate the moments of the distribution of collective 
                          variables. 
                    MIN - calculate the minimum value. 
                    MAX - calculate the maximum value. 
                ALT_MIN - calculate the minimum value. 
                 LOWEST - this flag allows you to recover the lowest of these 
                          variables. The final value can be referenced using 
                          <em>label</em>.lowest 
                HIGHEST - this flag allows you to recover the highest of these 
                          variables. The final value can be referenced using 
                          <em>label</em>.highest 
                 SWITCH - This keyword is used if you want to employ an alternative 
                          to the continuous switching function defined above. The 
                          following provides information on the \ref switchingfunction that are 
                          available. When this keyword is present you no longer need the NN, MM, 
                          D_0 and R_0 keywords. 


