+ /**
+ * Create file, if it not present
+ * @var bool
+ */
+ var $create = false;
+ /**
+ * Detect, if address book is writeable by checking file permisions
+ * @var bool
+ */
+ var $detect_writeable = true;
+ /**
+ * Control write access to address book
+ *
+ * Option does not have any effect, if 'detect_writeable' is 'true'
+ * @var bool
+ */
+ var $writeable = false;
+ /**
+ * controls listing of address book
+ * @var bool
+ */
+ var $listing = true;
+ /**
+ * Umask of the file
+ * @var string
+ */