+/* in more.c */
+extern int do_more (const char *cmd, int argc, char *argv[]);
+
+/* in rc.c (remote control) */
+extern void rc_listen (void);
+extern int rc_remote (int pid, const char *cmd, int argc, char *argv[],
+ int exit_on_error);
+
+/* in reopen.c */
+extern int do_reopen (const char *cmd, int argc, char *argv[]);
+
+/* in time.c */
+extern int do_time (const char *cmd, int argc, char *argv[]);
+
+/* in tilde.c */
+extern char *try_tilde_expansion (char *path);
+