$docx->addText('', array('fontSize' => 6, 'font' => 'Arial', 'spacingBottom' => 4, 'spacingTop' => 4)); is not working as expected.
$breakFragment = new WordFragment($docx);
$breakFragment->addBreak();
$runs = array();
$runs[] = array('text' => 'Content 1');
$runs[] = array('text' => ' ', 'fontSize' => 6, 'font' => 'Arial');
$runs[] = $breakFragment;
$runs[] = array('text' => 'Content 2');
$docx->addText($runs);
Also adds Microsoft Sanserif 11 font size. So how to reduce this size?