The excerpt below is doing the write. The array has about 260 elements. At line 60, a control-L and header repeat are printed, so clearly, I'm not setting the number of lines remaining the way I want to. To avoid confusion about special variables, I'm using the English module to be clear about what I'm setting.

    foreach my $line (@top_users_results) {
        ( $day, $hour, $count, $uid ) = split( ",", $line );
        $hour = substr( $hour, 0, 5 );
        $hits_total += $count;
        write TOPUSERS_COUNTS;
        $FORMAT_LINES_LEFT = 999;
    }
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