Parsedown::blockHeader( $Line )

    protected function blockHeader($Line)
    {
        $level = strspn($Line['text'], '#');

        if ($level > 6)
        {
            return;
        }

        $text = trim($Line['text'], '#');

        if ($this->strictMode and isset($text[0]) and $text[0] !== ' ')
        {
            return;
        }

        $text = trim($text, ' ');

        $Block = array(
            'element' => array(
                'name' => 'h' . $level,
                'handler' => array(
                    'function' => 'lineElements',
                    'argument' => $text,
                    'destination' => 'elements',
                )
            ),
        );

        return $Block;
    }