anchor.diff:  
       type HTMLAttr =
           | DefaultChecked of bool
  -        | DefaultValue of U2<string, ResizeArray<string>>
  +        | DefaultValue of string
           | Accept of string
           | AcceptCharset of string
           | AccessKey of string
  
positive.code: 
      type SVGAttr =
          | ClipPath of string
          | Cx of U2<float, string>
          | Cy of U2<float, string>
          | D of string
          | Dx of U2<float, string>
          | Dy of U2<float, string>
          | Fill of string
          | FillOpacity of U2<float, string>
          | FontFamily of string
          | FontSize of U2<float, string>
          | Fx of U2<float, string>
          | Fy of U2<float, string>
          | GradientTransform of string
          | GradientUnits of string
          | MarkerEnd of string
          | MarkerMid of string
          | MarkerStart of string
          | Offset of U2<float, string>
          | Opacity of U2<float, string>
          | PatternContentUnits of string
          | PatternUnits of string
          | Points of string
          | PreserveAspectRatio of string
          | R of U2<float, string>
          | Rx of U2<float, string>
          | Ry of U2<float, string>
          | SpreadMethod of string
          | StopColor of string
          | StopOpacity of U2<float, string>
          | Stroke of string
          | StrokeDasharray of string
          | StrokeLinecap of string
          | StrokeMiterlimit of string
          | StrokeOpacity of U2<float, string>
          | StrokeWidth of U2<float, string>
          | TextAnchor of string
          | Transform of string
          | Version of string
          | ViewBox of string
          | Width of U2<float, string>
          | X1 of U2<float, string>
          | X2 of U2<float, string>
          | X of U2<float, string>
          | XlinkActuate of string
          | XlinkArcrole of string
          | XlinkHref of string
  
negative.code:         | AutoFocus of bool
          | AutoPlay of bool
          | Capture of bool
          | CellPadding of obj
          | CellSpacing of obj
          | CharSet of string
          | Challenge of string
          | Checked of bool
  