anchor.diff:                  writer.WriteAttribute(a.Name, a.Value)
               writer.Write(HtmlTextWriter.SelfClosingTagEnd)
   
  -        // Renders tag with content. 
  +        // Renders tag with content.
           // E.g. <div class="c">...</div>
  -        member private this.RenderElementWithContent    name
  -                                            (attrs: list<Attribute<'T>>) 
  -                                            (contents : list<Element<'T>>) =
  +        member private this.RenderElementWithContent name
  +                (attrs: list<Attribute<'T>>)
  +                (contents : list<Element<'T>>) =
  +
               writer.WriteBeginTag(name)
               for a in attrs do
                   writer.WriteAttribute(a.Name, a.Value)
               writer.Write(HtmlTextWriter.TagRightChar)
  -        
  +
               // Render contents
               for content in contents do
                   this.Write content
  
positive.code: 
      /// Represents nodes.
      and Node<'T> =
          | AttributeNode  of Attribute<'T>
          | ContentNode    of Element<'T>
  
      /// Represents HTML/XML contents.
      and  Element<'T> =
          | TagContent      of TagContent<'T>
          | TextContent     of string
          | VerbatimContent of string
          | CommentContent  of string
  
          interface IElement<'T> with
              member this.Element = this
  
negative.code:         /// Returns the inner XmlWriter.
          member this.Writer = writer
  
          interface IDisposable with
              member this.Dispose() =
                  (writer :> IDisposable).Dispose()
  