Aspose.Words.Saving.IDocumentPartSavingCallback class. Implement this interface if you want to receive notifications and control how Aspose.Words saves document parts when exporting a document to [SaveFormat.Html](../../aspose.words/saveformat/#Html) or [SaveFormat.Epub](../../aspose.words/saveformat/#Epub) format....'DocumentPartsFileNam' , () => { let doc = new aw . Document ( base . myDir + "Rendering...document to HTML. let options = new aw . Saving . HtmlSaveOptions ();...