Yup. tye is right. I am wrong. S'ok. I've been wrong before. hehehe.

use CGI qw(:standard);
use CGI::Carp qw(fatalsToBrowser);
use sigtrap qw(handler croak normal-signals error-signals);

$|=1;
print &header;

for (1..60) {
    # Comment the next line, and see the difference!
    print "$_<BR>\n";
    sleep(1);
}
[download]

Run this code and hit the STOP button while it's looping. You'll get $SIG{PIPE} and possibly $SIG{TERM} as well. Comment out the print line, and the script will run to completion -- because, although STDOUT is closed, the script isn't printing. So, it never fails on a write to STDOUT to cause the $SIG{PIPE}.

Thanks for setting me straight, tye.