my @Notes;		# array of PNSearch objects
foreach my $file (@Files) {
	next unless (-f "$DBDir/$file" && !-z "$DBDir/$file");
	# scan text only database
	# each file represents one .html page, each line represents one whole note
	unless (open(DB, "<$DBDir/$file")) {
		CGIutil->logger($Log,"!!Could not open $DBDir/$file: $!");
		next;
	}
	my @lines = ();	# array of arrays, 0 = line number 1 = terms found: qv. checkline() below
	my $ln = 1;
	while (<DB>) {
		my @found = ($ln,checkline($_));
		push @lines, \@found if $found[1];
		$ln++;
	}
	close(DB);

	# pull selected notes from markup database 
	my $cur = 0;	# last line in db
	my $MUH;
	unless (open($MUH, "<$DBDir/markup/$file")) {
		CGIutil->logger($Log,"!!Can't open /markup/$file:  $!");
		next;
	}
	foreach my $l (@lines) {
		my $pns = PNSearch->new($MUH, $l->[0]-$cur, $l->[1], $file);
		push @Notes, $pns if ($pns); 
		$cur = $l->[0];
	}
	close($MUH); 
}

sub checkline {
	my $line = pop;
	my $c = 0;
	foreach (@Terms) {
		$c += 1 if ($line =~ /$Pfix<\|>.*?$_/); # anchor name is before first <|> (don't search that) 
	}
	# nb: return value is the number of terms found, not the number of individual hits
	# ie, if there is only one search term, this will be 0 or 1
	return $c;
}