/* special == 0 only. */
void (*line) (struct outp_driver *, int x0, int y0, int x1, int y1,
enum outp_line_style top, enum outp_line_style left,
/* special == 0 only. */
void (*line) (struct outp_driver *, int x0, int y0, int x1, int y1,
enum outp_line_style top, enum outp_line_style left,