message: Added a brief description.
diff: @@ -654,6 +654,8 @@ public:
  /// Set SOR-related parameters
  void SetSOROptions(double relax_weight, double omega);
  /// Set parameters for polynomial smoothing
  + /** By default, 10 iterations of CG are used to estimate the eigenvalues.
  + Setting eig_est_cg_iter = 0 uses hypre's hypre_ParCSRMaxEigEstimate() instead. */
  void SetPolyOptions(int poly_order, double poly_fraction, int eig_est_cg_iter = 10);
  /// Set parameters for Taubin's lambda-mu method
  void SetTaubinOptions(double lambda, double mu, int iter);
  