or download this
# Testing. Script reporting differences in variables that have
# no visual difference. Try assigning to temporary intermediates.
# (no difference, obviously, or I wouldn't be writing this node)
...
print " Change list: $changes{$variable}{max} ($changes{$variable
+}{sheet})\n";
print " Range file : $range_file{$variable}{max} ($range_file{$va
+riable}{sheet})\n";
}