As many of you know, I'm no fan whatsover of those [LIST] subject line tags -- my email client handles that kind of info just fine for me, but folk seem to like the [go figure..:o)] and so I tolerate. Recently I've been trying to figure out why the threading is messed up on some threads here on math-fun and I just saw the culprit: the location of the subject tag on [some] replies. Most replies to the list are properly tagged: Subject: Re: [math-fun] Skolem-like primes sequence with the 'Re' at the beginning of the subject line, with the rest of the subject line intact [as per the RFC]. BUT.. several of the replies on this thread have the subject line: Subject: [math-fun] Re: Skolem-like primes sequence Which is *NOT* correct [the RFC says that the 'Re' on replies should come at the *beginning* of the subject line]. And so my [RFC compliant] email client correctly decides that that's the start of a separate thread and breaks the threading. Anyone know how that happens [and what if anything, can be done to make it stop]??? /Bernie\ -- Bernie Cosell Fantasy Farm Fibers mailto:bernie@fantasyfarm.com Pearisburg, VA --> Too many people, too few sheep <--