--- a/stx_libbasic.st	Mon Feb 06 15:38:55 2017 +0100
+++ b/stx_libbasic.st	Mon Feb 06 15:38:57 2017 +0100
@@ -532,7 +532,6 @@
         SignedLongIntegerArray
         SignedWordArray
         Symbol
-        UnboundedExternalStream
         Unicode16String
         UnorderedNumbersError
         WordArray