- * - The error subsystem: \ref error.h.
- * - Access control for paraslash senders: \ref acl.c, \ref acl.h.
- * - Internal crypto API: \ref crypt.h.
- * - interactive sessions (libreadline): \ref interactive.c.
+ * - The error subsystem: \ref error.h, \ref error2.c,
+ * - Access control for paraslash senders: \ref acl.c, \ref acl.h,
+ * - Internal crypto API: \ref crypt.h,
+ * - interactive sessions (libreadline): \ref interactive.c,
+ * - sideband API: \ref sideband.h.