message: DOC: improve FieldData doxygen documentation
diff: @@ -90,6 +90,12 @@ public:
  *
  * \param [in] association the mesh topology association, e.g., NODE_CENTERED
  *
  + * \note The FieldAssociation enum provides a convenient way to specify
  + * values for the association parameter used in this constructor.
  + *
  + * \warning ANY_CENTERING, albeit defined in the FieldAssociation enum, it is
  + * used as wild-card and is not a valid value for this constructor.
  + *
  * \pre association >= NODE_CENTERED && association < NUM_FIELD_ASSOCIATIONS
  * \post this->getAssociation() == association
  * \post this->empty() == true
  @@ -230,8 +236,8 @@ public:
  bool storeInSidre=true );
  /*!
  - * \brief Creates a new field from a supplied external buffer which consists
  - * of the specified number of tuples and components.
  + * \brief Creates a new field which will use the supplied external buffer as
  + * storage, consisting of the specified number of tuples and components.
  *
  * \param [in] name the user-supplied name of this field
  * \param [in] data supplied external buffer
  