my $cols = $row->{cols};
my $colsize = $row->{cell} && $row->{cell}->{colsize} || 1;
my $coldigits = ceil(log($colsize * $cols) / log(16)); # uniform length of hexadecimal header
- my $rowdiv = 16 ** $coldigits; # divider of row headers
+ my $rowdiv = 16 ** $coldigits; # row divide for column digits
+ $rowdiv = 1 if $rowdiv != $cols * $colsize; # divide only if all columns are matched
my $offset = 0;
my $endpoint = $offset + (length($row->{table}) || 256) * $colsize;
printf '<caption>%s</caption>', $title;
print '<col>' x ($cols + 1);
for my $section (qw{thead}) {
- print "<$section><tr><th>↱";
+ print "<$section><tr><th>", $rowdiv == 1 ? '+' : '↱';
printf '<th>%0*X', $coldigits, $_ * $colsize for 0 .. $cols - 1;
print "\n";
}