function renderPartTitle( $args ) {
		unset( $args['label_for'], $args['class'] );
		$this->renderCheckbox(
			[
				'id' => 'part_title',
				'name' => 'pressbooks_theme_options_' . $this->getSlug(),
				'option' => 'part_title',
				'value' => ( isset( $this->options['part_title'] ) ) ? $this->options['part_title'] : '',
				'label' => $args[0],
			]
		);
	}