message: Update a comment in class MixedBilinearForm.
diff: @@ -476,8 +476,8 @@ protected:
  FiniteElementSpace *trial_fes, ///< Not owned
  *test_fes; ///< Not owned
  - /** @brief Indicates the BilinearFormIntegrator%s stored in #dom, #bdr,
  - #skt and #bskt are owned by another MixedBilinearForm. */
  + /** @brief Indicates the BilinearFormIntegrator%s stored in #dbfi, #bbfi,
  + #tfbfi and #btfbfi are owned by another MixedBilinearForm. */
  int extern_bfs;
  /// Domain integrators.
  @@ -562,6 +562,7 @@ public:
  /// Adds a boundary integrator. Assumes ownership of @a bfi.
  void AddBoundaryIntegrator (BilinearFormIntegrator * bfi,
  Array<int> &bdr_marker);
  +
  /** @brief Add a trace face integrator. Assumes ownership of @a bfi.
  This type of integrator assembles terms over all faces of the mesh using
  