function upgradeSectionOpenings() {
		$_option = $this->getSlug();
		$options = get_option( 'pressbooks_theme_options_' . $_option, $this->defaults );

		// Get more specific
		if ( ! isset( $options['pdf_blankpages'] ) || 1 === absint( $options['pdf_blankpages'] ) || 'include' === $options['pdf_blankpages'] ) {
			$options['pdf_sectionopenings'] = 'openauto';
		} elseif ( 2 === absint( $options['pdf_blankpages'] ) || 'remove' === $options['pdf_blankpages'] ) {
			$options['pdf_sectionopenings'] = 'remove';
		}
		unset( $options['pdf_blankpages'] );

		update_option( 'pressbooks_theme_options_' . $_option, $options );
	}