anchor.diff:  /// should be provided as a [foreground] paint. The following example uses a [Stack]
   /// to produce a stroke and fill effect.
   ///
  -/// ![Text border](https://flutter.github.io/assets-for-api-docs/assets/widgets/text_border.png)
  +/// ![](https://flutter.github.io/assets-for-api-docs/assets/widgets/text_border.png)
   ///
   /// ```dart
   /// Stack(
  
positive.code:   /// defined line height and the line height produced with `height: 1.0`
    /// (which forms the upper and lower edges of the EM-square):
    ///
    /// ![Text height diagram](https://flutter.github.io/assets-for-api-docs/assets/painting/text_height_diagram.png)
    ///
    /// Examples of the resulting line heights from different values of `TextStyle.height`:
    ///
    /// ![Text height comparison diagram](https://flutter.github.io/assets-for-api-docs/assets/painting/text_height_comparison_diagram.png)
    ///
    /// See [StrutStyle] for further control of line height at the paragraph level.
    final double? height;
  
negative.code: ///
  /// Examples of the resulting heights from different values of `TextStyle.height`:
  ///
  /// ![Since the explicit line height is applied as a scale factor on the font-metrics-defined line height, the gap above the text grows faster, as the height grows, than the gap below the text.](https://flutter.github.io/assets-for-api-docs/assets/painting/text_height_comparison_diagram.png)
  ///
  /// See [StrutStyle] for further control of line height at the paragraph level.
  ///
  