extern void tui_update_source_windows_with_addr (struct gdbarch *, CORE_ADDR);
extern void tui_update_source_windows_with_line (struct symtab *,
int);
-extern void tui_clear_source_content (struct tui_source_window_base *);
/* Constant definitions. */
#define SCROLL_THRESHOLD 2 /* Threshold for lazy scroll. */