anchor.diff:  /// of [Curves.elasticInOut].
   /// {@animation 250 266 https://flutter.github.io/assets-for-api-docs/assets/widgets/animated_default_text_style.mp4}
   ///
  -/// For the animation, you can chose a [curve] as well as a [duration] and the
  +/// For the animation, you can choose a [curve] as well as a [duration] and the
   /// widget will automatically animate to the new default text style. If you require
   /// more control over the animation (e.g. if you want to stop it mid-animation),
  -/// consider using an [DefaultTextStyleTransition] instead, which takes a provided
  +/// consider using a [DefaultTextStyleTransition] instead, which takes a provided
   /// [Animation] as argument. While that allows you to fine-tune the animation,
   /// it also requires more development overhead as you have to manually manage
   /// the lifecycle of the underlying [AnimationController].
  
positive.code: /// the animation. While these widgets are simple to use and don't require you
  /// to manually manage the lifecycle of an [AnimationController], they
  /// are also somewhat limited: Besides the target value for the animated
  /// property, developers can only chose a [duration] and [curve] for the
  /// animation. If you require more control over the animation (e.g. you want
  /// to stop it somewhere in the middle), consider using a
  /// [AnimatedWidget] or one of its subclasses. These widget take an [Animation]
  /// as an argument to power the animation. This gives the developer full control
  /// over the animation at the cost of requiring you to manually manage the
  /// underlying [AnimationController].
  
negative.code: /// of [Curves.fastOutSlowIn].
  /// {@animation 250 266 https://flutter.github.io/assets-for-api-docs/assets/widgets/animated_positioned.mp4}
  ///
  /// For the animation, you can choose a [curve] as well as a [duration] and the
  /// widget will automatically animate to the new target position. If you require
  /// more control over the animation (e.g. if you want to stop it mid-animation),
  /// consider using a [PositionedTransition] instead, which takes a provided
  /// [Animation] as an argument. While that allows you to fine-tune the animation,
  /// it also requires more development overhead as you have to manually manage
  /// the lifecycle of the underlying [AnimationController].
  ///
  