display corresponding section for markers in explorer

scripts/menu.pl

@@ -275,13 +275,6 @@ my %handlers = (
             }
         }
 
-        # TODO: To util function
-        sub format_number_sep {
-            my ($number) = @_;
-            1 while $number =~ s/^(-?\d+)(\d{3})/$1.$2/;
-            return $number;
-        }
-
         my @benchs  = ( 'ip', 'mem', 'regs' );
         my @markers = (
             'OK_MARKER',       'FAIL_MARKER',
@@ -305,7 +298,7 @@ my %handlers = (
                     {
                         $entry .= sprintf(
                             "%50s  ",
-                            format_number_sep(
+                            Util::format_number_sep(
                                 $all_results{$experiment}{$benchmark}{$marker}
                             )
                         );