public static function indent( $lines, $cnt = 1 )
	{
		$new = [];
		$lines = str_contains( $lines, '\r\n' ) ? explode( "\r\n", $lines ) : explode( "\n", $lines );

		foreach ( $lines as $line )
			$new[] = str_repeat( "\t", $cnt ) . $line;

		return implode( "\n", $new );
	}