anchor.diff:    /// parents.
     SemanticsSortOrder order;
   
  -  /// The is the starting corner for the rectangle on this semantics node in
  -  /// global coordinates. When the container has the directionality
  -  /// [TextDirection.ltr], this is the upper left corner.  When the container
  -  /// has the directionality [TextDirection.rtl], this is the upper right
  -  /// corner. When the container has no directionality, this is set, but the
  -  /// x coordinate is ignored.
  +  /// The starting corner for the rectangle on this semantics node in
  +  /// global coordinates.
  +  ///
  +  /// When the container has the directionality [TextDirection.ltr], this is the
  +  /// upper left corner.  When the container has the directionality
  +  /// [TextDirection.rtl], this is the upper right corner. When the container
  +  /// has no directionality, this is set, but the x coordinate is ignored.
     Offset globalStartCorner;
   
     static Offset _transformPoint(Offset point, Matrix4 matrix) {
  
positive.code:   /// `keys: <SemanticsSortKey>[key]`.
    ///
    /// If [discardParentOrder] is set to true, then the [SemanticsSortOrder.keys]
    /// will _replace_ the list of keys from the parents when merged, instead of
    /// extending them.
    SemanticsSortOrder({
      SemanticsSortKey key,
      List<SemanticsSortKey> keys,
  
negative.code: ///           child: const Text('Label One'),
  ///         ),
  ///         new Semantics(
  ///           sortOrder: new SemanticsSortOrder(key: new OrdinalSortKey(1.0)),
  ///           child: const Text('Label Two'),
  ///         ),
  ///       ],
  