This command is used to remove outlier states during clustering with subsequent NC or TC commands. If statsfile is present it first reads in the HEREST statistics file (see LS) otherwise it expects a separate LS command to have already been used to read in the statistics. Any subsequent NC, TC or TB commands are extended to ensure that the occupancy clusters produced exceeds the threshold f. For TB this is used to choose which questions are allowed to be used to split each node. Whereas for NC and TC a final merging pass is used and for as long the smallest cluster count falls below the threshold f, then that cluster is merged with its nearest neighbour.