function i18n($file, $locale = NULL){
        $this->fileName= $file;
        $this->i18nContent= NULL;
        if($locale != NULL){
            if(file_exists(PATHAPP . 'src/content/' . $file . "_$locale" . '.txt')){
                $this->i18nContent= \E_fn\load_application_file('src/content/' . $file . "_$locale" . '.txt');
                $this->i18nContent= \E_fn\parse_properties($this->i18nContent);
                $this->locale= $locale;
            }
        }
        if($this->i18nContent == NULL){
            $this->i18nContent= \E_fn\load_application_file('src/content/' . $file . '.txt');
            $this->i18nContent= \E_fn\parse_properties($this->i18nContent);
            $this->locale= 'Default';
        }
    }