-void refresh_screen();
-void statusline_msg(char *msg);
-char *ask_filename(char *prompt, int flags);
-void clear_statusline();
-void statusline_addstr(char *str);
-char *statusline_getnstr(char *str, int n, int use_filesel);
-void headerline(char *str);
-void refresh_statusline();
-void display_editor_help();