protected function isSpecialLine($line)
    {
        if (strlen($line) < 3) {
            return false;
        }

        $letter = $line[0];

        $environment = $this->environment;
        if (!in_array($letter, $environment::$letters)) {
            return false;
        }

        for ($i=1; $i<strlen($line); $i++) {
            if ($line[$i] != $letter) {
                return false;
            }
        }

        return $letter;
    }
protected function isSpecialLine($line)
    {
        if (strlen($line) < 3) {
            return false;
        }

        $letter = $line[0];

        $environment = $this->environment;
        if (!in_array($letter, $environment::$letters)) {
            return false;
        }

        for ($i=1; $i<strlen($line); $i++) {
            if ($line[$i] != $letter) {
                return false;
            }
        }

        return $letter;
    }
protected function isSpecialLine ( $ line ) { if ( strlen ( $ line ) < 3 ) { return false ; } $ letter = $ line [ 0 ] ; $ environment = $ this -> environment ; if ( ! in_array ( $ letter , $ environment :: $ letters ) ) { return false ; } for ( $ i = 1 ; $ i < strlen ( $ line ) ; $ i ++ ) { if ( $ line [ $ i ] != $ letter ) { return false ; } } return $ letter ; }
Tell if a line is a special separating line for title and separators,
returns the depth of the special line

@param string $line
@return bool
Tell if a line is a special separating line for title and separators returns the depth of the special line