+extern SockAddr mactcp_namelookup(char const *, char **);
+extern SockAddr mactcp_nonamelookup(char const *);
+extern void mactcp_getaddr(SockAddr, char *, int);
+extern int mactcp_hostname_is_local(char *);
+extern int mactcp_address_is_local(SockAddr);
+extern int mactcp_addrtype(SockAddr);
+extern void mactcp_addrcopy(SockAddr, char *);
+extern void mactcp_addr_free(SockAddr);
+extern Socket mactcp_register(void *, Plug);
+extern Socket mactcp_new(SockAddr addr, int, int, int, int, int, Plug);
+extern Socket mactcp_newlistener(char *, int, Plug, int, int);
+extern char *mactcp_addr_error(SockAddr);
+/* from otnet.c */
+extern OSErr ot_init(void);
+extern void ot_cleanup(void);
+extern void ot_poll(void);
+extern SockAddr ot_namelookup(char const *, char **);
+extern SockAddr ot_nonamelookup(char const *);
+extern void ot_getaddr(SockAddr, char *, int);
+extern int ot_hostname_is_local(char *);
+extern int ot_address_is_local(SockAddr);
+extern int ot_addrtype(SockAddr);
+extern void ot_addrcopy(SockAddr, char *);
+extern void ot_addr_free(SockAddr);
+extern Socket ot_register(void *, Plug);
+extern Socket ot_new(SockAddr addr, int, int, int, int, int, Plug);
+extern Socket ot_newlistener(char *, int, Plug, int, int);
+extern char *ot_addr_error(SockAddr);
+/* from macabout.c */
+extern void mac_openabout(void);
+/* from macctrls.c */
+extern void macctrl_layoutbox(struct controlbox *, WindowPtr,
+ struct macctrls *);
+extern void macctrl_activate(WindowPtr, EventRecord *);
+extern void macctrl_click(WindowPtr, EventRecord *);
+extern void macctrl_key(WindowPtr, EventRecord *);
+extern void macctrl_update(WindowPtr);
+extern void macctrl_adjustmenus(WindowPtr);
+extern void macctrl_close(WindowPtr);
+
+
+/* from macpgkey.c */
+extern void mac_newkey(void);
+/* Apple Event Handlers (in various files) */
+extern pascal OSErr mac_aevt_oapp(const AppleEvent *, AppleEvent *, long);
+extern pascal OSErr mac_aevt_odoc(const AppleEvent *, AppleEvent *, long);
+extern pascal OSErr mac_aevt_pdoc(const AppleEvent *, AppleEvent *, long);
+extern pascal OSErr mac_aevt_quit(const AppleEvent *, AppleEvent *, long);