public function glossaryTooltip( $glossary_term_id, $content ) {

		global $id; // This is the Post ID, [@see WP_Query::setup_postdata, ...]

		// Get the glossary post object the glossary term ID belongs to
		$glossary_term = get_post( $glossary_term_id );
		if ( ! $glossary_term ) {
			return $content . 'no post';
		}
		if ( $glossary_term->post_status === 'trash' ) {
			return $content;
		}

		$html = '<button class="glossary-term" aria-describedby="' . $id . '-' . $glossary_term_id . '">' . $content . '</button>';

		return $html;
	}