static void ascii_flush (struct outp_driver *);
static int get_default_box_char (size_t idx);
static bool update_page_size (struct outp_driver *, bool issue_error);
static void ascii_flush (struct outp_driver *);
static int get_default_box_char (size_t idx);
static bool update_page_size (struct outp_driver *, bool issue_error);