Aspose::Words::Saving::HtmlSaveOptions::get_NavigationMapLevel method. Specifies the maximum level of headings populated to the navigation map when exporting to EPUB, MOBI, or AZW3 formats. Default value is %3 in C++....of headings are populated: paragraphs of styles Heading 1 , Heading...DocumentBuilder > ( doc ); // Every paragraph that we format using a "Heading"...