diff --git a/basis/delegate/protocols/protocols.factor b/basis/delegate/protocols/protocols.factor
index edbec804c1..f568a3e388 100644
--- a/basis/delegate/protocols/protocols.factor
+++ b/basis/delegate/protocols/protocols.factor
@@ -1,27 +1,25 @@
 ! Copyright (C) 2007 Daniel Ehrenberg
 ! See http://factorcode.org/license.txt for BSD license.
 USING: delegate sequences.private sequences assocs
-io io.styles definitions kernel continuations ;
+io definitions kernel continuations ;
 IN: delegate.protocols
 
 PROTOCOL: sequence-protocol
-    clone clone-like like new-sequence new-resizable nth
-    nth-unsafe set-nth set-nth-unsafe length set-length
-    lengthen ;
+like new-sequence new-resizable nth nth-unsafe
+set-nth set-nth-unsafe length set-length
+lengthen ;
 
 PROTOCOL: assoc-protocol
-    at* assoc-size >alist set-at assoc-clone-like
-    delete-at clear-assoc new-assoc assoc-like ;
+at* assoc-size >alist set-at assoc-clone-like
+delete-at clear-assoc new-assoc assoc-like ;
 
 PROTOCOL: input-stream-protocol
-    stream-read1 stream-read stream-read-partial stream-readln
-    stream-read-until ;
+stream-read1 stream-read stream-read-partial stream-readln
+stream-read-until ;
 
 PROTOCOL: output-stream-protocol
-    stream-flush stream-write1 stream-write stream-format
-    stream-nl make-span-stream make-block-stream
-    make-cell-stream stream-write-table ;
+stream-flush stream-write1 stream-write stream-nl ;
 
 PROTOCOL: definition-protocol
-    where set-where forget uses
-    synopsis* definer definition ;
+where set-where forget uses
+synopsis* definer definition ;
diff --git a/basis/io/streams/duplex/duplex.factor b/basis/io/streams/duplex/duplex.factor
index 02b56d9ab2..2eb5cc602a 100644
--- a/basis/io/streams/duplex/duplex.factor
+++ b/basis/io/streams/duplex/duplex.factor
@@ -1,7 +1,7 @@
-! Copyright (C) 2005, 2008 Slava Pestov.
+! Copyright (C) 2005, 2009 Slava Pestov.
 ! See http://factorcode.org/license.txt for BSD license.
 USING: kernel continuations destructors io io.encodings
-io.encodings.private io.timeouts io.ports summary
+io.encodings.private io.timeouts io.ports io.styles summary
 accessors delegate delegate.protocols ;
 IN: io.streams.duplex
 
@@ -10,35 +10,33 @@ TUPLE: duplex-stream in out ;
 C: <duplex-stream> duplex-stream
 
 CONSULT: input-stream-protocol duplex-stream in>> ;
-
 CONSULT: output-stream-protocol duplex-stream out>> ;
+CONSULT: formatted-output-stream-protocol duplex-stream out>> ;
+
+: >duplex-stream< ( stream -- in out ) [ in>> ] [ out>> ] bi ; inline
 
 M: duplex-stream set-timeout
-    [ in>> set-timeout ] [ out>> set-timeout ] 2bi ;
+    >duplex-stream< [ set-timeout ] bi-curry@ bi ;
 
 M: duplex-stream dispose
     #! The output stream is closed first, in case both streams
     #! are attached to the same file descriptor, the output
     #! buffer needs to be flushed before we close the fd.
-    [
-        [ in>> &dispose drop ]
-        [ out>> &dispose drop ]
-        bi
-    ] with-destructors ;
+    [ >duplex-stream< [ &dispose drop ] bi@ ] with-destructors ;
 
 : <encoder-duplex> ( stream-in stream-out encoding -- duplex )
     [ re-decode ] [ re-encode ] bi-curry bi* <duplex-stream> ;
 
 : with-stream* ( stream quot -- )
-    [ [ in>> ] [ out>> ] bi ] dip with-streams* ; inline
+    [ >duplex-stream< ] dip with-streams* ; inline
 
 : with-stream ( stream quot -- )
-    [ [ in>> ] [ out>> ] bi ] dip with-streams ; inline
+    [ >duplex-stream< ] dip with-streams ; inline
 
 ERROR: invalid-duplex-stream ;
 
 M: duplex-stream underlying-handle
-    [ in>> underlying-handle ]
-    [ out>> underlying-handle ] bi
+    >duplex-stream<
+    [ underlying-handle ] bi@
     [ = [ invalid-duplex-stream ] when ] keep ;