line_no
480	print $fh_debug "jj\n";
481
482	print $fh_debug "\$fh_debug is defined\n" if (defined ($fh_debug));
483
484	if (close ($fh_debug))
485
486		{
487			<do some stuff>;
488		}
489
490	else
491
492		{
493			print STDERR "\nCould not close \$fh_debug: $!\n";
494			die;
495		}