# If we are bolding the results, let's bold them.
if ($CFG->{search_bold}) {
my $tempquery = $args->{query};
$tempquery =~ s/[+\-"']//g;
my @terms = split /\s/, $tempquery;
foreach my $term (@terms) {
next unless ($term);
$term =~ s/^\s*|\s*$//;
if ($term =~ s/(.+)\*(.*)/$1/) {
push @terms, $2 if ($2);
$term = $1;
}
$link_results =~ s,(<[^>]+>)|(\Q$term\E),defined($1) ? $1 : "<B>$2</B>",gie if ($link_results);
$category_results =~ s,(<[^>]+>)|(\Q$term\E),defined($1) ? $1 : "<B>$2</B>",gie if ($category_results);
}
}

# Print the output.
my $results = {
link_results => $link_results,
link_results_loop => \@link_results_loop,
category_results => $category_results,
category_results_loop => \@category_results_loop,
link_hits => $link_count,
cat_hits => $cat_count,
next => $toolbar,
term => $term
};
return $results;
}

<!-- Bold ON -->

whatever you want bolded here...

<!-- Bold OFF -->