a MATLAB version</a>.
    </p>
    
    <h3 align = "center">
      Related Data and Programs:
    </h3>

    <p>
      <a href = "../../m_src/chain_letter_tree/chain_letter_tree.html">
      CHAIN_LETTER_TREE</a>,
      a MATLAB program which analyzes a similarity matrix for 11 versions 
      of a single chain letter and produces a dendrogram or tree diagram 
      that suggests the degrees of relatedness and the evolutionary history 
      of the letters.
    </p>

    <p>
      <a href = "../../datasets