message: Updated one more comment.
diff: @@ -559,9 +559,10 @@ public:
  /** @brief Return a FaceQuadratureInterpolator that interpolates E-vectors to
  quadrature point values and/or derivatives (Q-vectors).
  - @note The returned pointer is shared, so it is not advisable to change
  - its internals, e.g., its layout. A good practice is to cache the old
  - property and restore it after interpolation. */
  + @note The returned pointer is shared. A good practice, before using it,
  + is to set all its properties to their expected values, as other parts of
  + the code may also change them. That is, it's good to call
  + SetOutputLayout() and DisableTensorProducts() before interpolating. */
  const FaceQuadratureInterpolator *GetFaceQuadratureInterpolator(
  const IntegrationRule &ir, FaceType type) const;
  