HTML DSL using using.

Using.Dsl.cs

public override void Write()
{
  using(Html())
  {
    using (Head())
    {
      using (Title())
      {
        Text("Greeting");
      }
    }
    using (Body(Bgcolor("pink")))
    {
      using(P(Style("font-size:large")))
      {
        Text("Hello world!");
      }
    }
  }
}