## SaveOptions.ProgressCallback property Called during saving a document and accepts data about saving progress. ```csharp public IDocumentSavingCallb ProgressCallback { get; set; } ``` ## Remarks ......Dotm, Dotx, Doc, Dot, Html, Mhtml, Epub, XamlFlow, or XamlFlowPack...formats are supported: Html, Mhtml, Epub. HtmlSaveOptions saveOptions...