Using sections in Editor/Display templates

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You could proceed with a conjunction of two helpers:

public static class HtmlExtensions
{
    public static MvcHtmlString Script(this HtmlHelper htmlHelper, Func<object, HelperResult> template)
    {
        htmlHelper.ViewContext.HttpContext.Items["_script_" + Guid.NewGuid()] = template;
        return MvcHtmlString.Empty;
    }

    public static IHtmlString RenderScripts(this HtmlHelper htmlHelper)
    {
        foreach (object key in htmlHelper.ViewContext.HttpContext.Items.Keys)
        {
            if (key.ToString().StartsWith("_script_"))
            {
                var template = htmlHelper.ViewContext.HttpContext.Items[key] as Func<object, HelperResult>;
                if (template != null)
                {
                    htmlHelper.ViewContext.Writer.Write(template(null));
                }
            }
        }
        return MvcHtmlString.Empty;
    }
}

and then in your _Layout.cshtml:

<body>
...
@Html.RenderScripts()
</body>

and somewhere in some template:

@Html.Script(
    @<script src="https://stackoverflow.com/questions/5433531/@Url.Content("~/Scripts/jquery-1.4.4.min.js")" type="text/javascript"></script>
)

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