+/* Things provided by uxcons.c */
+struct termios;
+void stderr_tty_init(void);
+void premsg(struct termios *);
+void postmsg(struct termios *);
+
+/* The interface used by uxsel.c */
+typedef struct uxsel_id uxsel_id;
+void uxsel_init(void);
+typedef int (*uxsel_callback_fn)(int fd, int event);
+void uxsel_set(int fd, int rwx, uxsel_callback_fn callback);
+void uxsel_del(int fd);
+int select_result(int fd, int event);
+int first_fd(int *state, int *rwx);
+int next_fd(int *state, int *rwx);
+/* The following are expected to be provided _to_ uxsel.c by the frontend */
+uxsel_id *uxsel_input_add(int fd, int rwx); /* returns an id */
+void uxsel_input_remove(uxsel_id *id);
+
+/* uxcfg.c */
+struct controlbox;
+void unix_setup_config_box(struct controlbox *b, int midsession, int protocol);
+
+/* gtkcfg.c */
+void gtk_setup_config_box(struct controlbox *b, int midsession, void *window);
+
+/*
+ * In the Unix Unicode layer, DEFAULT_CODEPAGE is a special value
+ * which causes mb_to_wc and wc_to_mb to call _libc_ rather than
+ * libcharset. That way, we can interface the various charsets
+ * supported by libcharset with the one supported by mbstowcs and
+ * wcstombs (which will be the character set in which stuff read
+ * from the command line or config files is assumed to be encoded).
+ */
+#define DEFAULT_CODEPAGE 0xFFFF
+#define CP_UTF8 CS_UTF8 /* from libcharset */