message: docs: extra info on params
diff: @@ -1247,9 +1247,9 @@ private:
  /*!
  *****************************************************************************
  * \brief Applies a provided function to nested elements of the calling table
  - * and stores the result in a range
  + * and stores the result in a range pointed to by an output iterator \a output
  *
  - * \pre The function must accept two arguments of type Table& and
  + * \pre The function \a func must accept two arguments of type Table& and
  * const std::string&, respectively.
  *
  * This function will pass to the provided function the nested table
  