-extern void cmcostinit P_ ((struct tty_output *));
-extern void cmgoto P_ ((struct tty_output *, int, int));
-extern void Wcm_clear P_ ((struct tty_output *));
-extern int Wcm_init P_ ((struct tty_output *));
+extern void cmcostinit P_ ((struct tty_display_info *));
+extern void cmgoto P_ ((struct tty_display_info *, int, int));
+extern void Wcm_clear P_ ((struct tty_display_info *));
+extern int Wcm_init P_ ((struct tty_display_info *));