Orchard/src/Orchard.Web/Core/Contents/Views/Content.Edit.cshtml

<div class="edit-item">
    <div class="edit-item-primary">
        @if (Model.Content != null) {
            <div class="edit-item-content">
                @Display(Model.Content)
            </div>
        }
    </div>
    <div class="edit-item-secondary group">
        @if (Model.Actions != null) {
            <div class="edit-item-actions">
                @Display(Model.Actions)
            </div>
        }
        @if (Model.Sidebar != null) {
            <div class="edit-item-sidebar group">
                @Display(Model.Sidebar)
            </div>
        }
    </div>
</div>

@if (!String.IsNullOrWhiteSpace(Request.QueryString["returnUrl"])) {
    @Html.Hidden("returnUrl", Request.QueryString["returnUrl"])
}