e>
 
 <pre> -k &lt;num&gt;
  The number of clusters (default 4)</pre>
 
 <pre> -G
  Set pattern to grid (default is random).
  This flag cannot be used at the same time as flag I.
  The pattern is random, if neither flag G nor flag I is set.</pre>
 
 <pre> -I
  Set pattern to sine (default is random).
  This flag cannot be used at the same time as flag I.
  The pattern is random, if neither flag G nor flag I is set.</pre>
 
 <pre> -N &lt;num&gt;..&lt;num&gt;
  The range of number of instances per cluster (d