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Short helpfile for action LESS_THAN
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The following arguments are compulsory: 

                     NN - ( default=6 ) The n parameter of the switching function 
                     MM - ( default=0 ) The m parameter of the switching function; 0 
                          implies 2*NN 
                    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: 

                SQUARED - ( default=off ) is the input quantity the square of the 
                          value that you would like to apply the switching function to 
                    ARG - the input to this function. You can use multiple instances 
                          of this keyword i.e. ARG1, ARG2, ARG3... 
                 SWITCH - This keyword is used if you want to employ an alternative 
                          to the continuous swiching 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. 


