This is text under the first header. I wonder how you make a paragraph. Do I really need to write code to do that? There's probably a character..

This is some code:

private function exportCsv($result, $params)  {
    $header = $params["fields"];
    array_unshift($header, "Timestamp");
    
    $result = array_map(function($v)  {
        $time = date("Ymd\THis\Z", $v["time"]);
        $v["time"] = $time;
        return array_values($v);
    }, $result);
    
    $csv = Writer::createFromString("");
    $csv->insertOne($header);
    $csv->insertAll($result);
    
    return $csv;
}

More stuff here.