Orchard/src/Orchard.Web/Modules/Orchard.Widgets/Views/Admin/AddWidget.cshtml

<h1>@Html.TitleForPage(T("Add Widget").ToString())</h1>
@using (Html.BeginFormAntiForgeryPost()) {
    @Html.ValidationSummary()
    // Model is a Shape, calling Display() so that it is rendered using the most specific template for its Shape type
    @Display(Model)
}