Thanks, Robert! I'll go on hold for a while and hope for the best :-) Ref. reworking, I'm having another xmas-wish... [please bear with me if this has already been discussed, I'm suffering from a mail backlog] You know, I am one of "those" who always try to compare v4 vs v6 "quality" for dual-stack destinations. Obvious candidates are dns root servers. Thus, going to the interactive detail graphs, and assuming that I will be able to save the display to a file, it would *really* be useful to have the graphs use the same scaling on the y-axis. So, unless you've got a better idea, I'd like to ask for a new "button" - similar to "zoom" -, which allows me to specify the (lower and) upper value boundary for the y-axis. Does this make sense? Wilfried.