message: Minor Doxygen edits
diff: @@ -305,9 +305,9 @@ public:
  /// Finalizes the matrix initialization.
  virtual void Finalize(int skip_zeros = 1);
  - /** @brief Returns a const reference to the sparse matrix.
  + /** @brief Returns a const reference to the sparse matrix: \f$ M \f$
  - This will fail if @sa HasSpMat() is false. */
  + This will fail if HasSpMat() is false. */
  const SparseMatrix &SpMat() const
  {
  MFEM_VERIFY(mat, "mat is NULL and can't be dereferenced");
  @@ -316,7 +316,7 @@ public:
  /** @brief Returns a reference to the sparse matrix: \f$ M \f$
  - This will fail if @sa HasSpMat() is false. */
  + This will fail if HasSpMat() is false. */
  SparseMatrix &SpMat()
  {
  MFEM_VERIFY(mat, "mat is NULL and can't be dereferenced");
  @@ -336,18 +336,20 @@ public:
  to it. Used for transfering ownership. */
  SparseMatrix *LoseMat() { SparseMatrix *tmp = mat; mat = NULL; return tmp; }
  - /** Returns a const reference to the sparse matrix of eliminated b.c.: \f$ M_e \f$
  + /** @brief Returns a const reference to the sparse matrix of eliminated b.c.:
  + \f$ M_e \f$
  - This will fail if @sa HasSpMatElim() is false. */
  + This will fail if HasSpMatElim() is false. */
  const SparseMatrix &SpMatElim() const
  {
  MFEM_VERIFY(mat_e, "mat_e is NULL and can't be dereferenced");
  return *mat_e;
  }
  - /** Returns a reference to the sparse matrix of eliminated b.c.: \f$ M_e \f$
  + /** @brief Returns a reference to the sparse matrix of eliminated b.c.:
  + \f$ M_e \f$
  - This will fail if @sa HasSpMatElim() is false. */
  + This will fail if HasSpMatElim() is false. */
  SparseMatrix &SpMatElim()
  {
  MFEM_VERIFY(mat_e, "mat_e is NULL and can't be dereferenced");
  