ds={
class = "EpdfDS";
epdf = {
  class = "enorm<ldmat>";
  mu = ( "matrix", 2, 1, [ 1.0, 2.0 ] );
  R =  ( "matrix", 2, 2, [ 1e-4, 0.0, 0.0,  2e-4 ] );
  rv = {
    class = "RV";
    names = ( "a", "b" );
  };
};
};