endent heat equation over an arbitrary
      triangulated region.
    </p>

    <p>
      The computational region is initially unknown by the program.  The user
      specifies it by preparing a file containing the coordinates of
      the nodes, and a file containing the indices of nodes that make
      up triangles that form a triangulation of the region.
    </p>

    <p>
      Normally, the user does not type in this information by hand, but has
      a program fill in the nodes, and perhaps another pr