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Short helpfile for action LANDMARK_SELECT_RANDOM
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The input trajectory can be in any of the following formats: 

   USE_OUTPUT_DATA_FROM - use the output of the analysis performed by this object as 
                          input to your new analysis object 

The following arguments are compulsory: 

             NLANDMARKS - the number of landmarks that you would like to select 
                   SEED - ( default=1234 ) a random number seed 

In addition you may use the following options: 

                 SERIAL - ( default=off ) do the calculation in serial. Do not use 
                          MPI 
                 LOWMEM - ( default=off ) lower the memory requirements 
              NOVORONOI - ( default=off ) do not do a Voronoi analysis of the data to 
                          determine weights of final points 
         IGNORE_WEIGHTS - ( default=off ) ignore the weights in the underlying 
                          analysis object 

