_PageStart.cshtml

@{
    var path = Request.PhysicalPath.Trim('\\');
    if (path == Request.PhysicalApplicationPath.Trim('\\')) {
        Page.DocumentTitle = "Orchard Documentation";
        Page.Title = Page.DocumentTitle;
        Page.EditUrl = "https://github.com/OrchardCMS/OrchardDoc/blob/master/Index.markdown";
    }
    else {
        // https://github.com/NuGet/NuGetDocs/blob/master/Docs.Core/MarkdownEngine/MarkdownWebPage.cs
        var caseSensitiveDocName = System.Web.Hosting.HostingEnvironment.VirtualPathProvider.GetFile(Request.Path + ".markdown").Name;
        var docNameWithoutExtension = Path.GetFileNameWithoutExtension(caseSensitiveDocName);
        Page.DocumentTitle = docNameWithoutExtension.Replace('-', ' ');
        Page.Title = Page.DocumentTitle + " - Orchard Documentation";
        Page.EditUrl = "https://github.com/OrchardCMS/OrchardDoc/blob/master/Documentation/" + caseSensitiveDocName;
    }
    Page.IssuesUrl = "https://github.com/OrchardCMS/OrchardDoc/issues";
    Layout = "_SiteLayout.cshtml";
}