## HtmlSaveOptions class Can be used to specify additional options when saving a document into the Html, Mhtml, Epub, Azw3 or Mobi format. To learn more, visit the [Specify Save Options](https://do...... The default value is `false`. | | [AllowNegativeIndent](...saving to HTML, MHTML or EPUB. Default value is `false`. | | [CssClassNamePrefix](...