diff --git a/basis/bootstrap/stage2.factor b/basis/bootstrap/stage2.factor
index 4886ec124d4..15872ce4997 100644
--- a/basis/bootstrap/stage2.factor
+++ b/basis/bootstrap/stage2.factor
@@ -1,11 +1,9 @@
 ! Copyright (C) 2004, 2008 Slava Pestov.
 ! See http://factorcode.org/license.txt for BSD license.
-USING: accessors init namespaces words words.symbol io
-kernel.private math memory continuations kernel io.files
-io.pathnames io.backend system parser vocabs sequences
-vocabs.loader combinators splitting source-files strings
-definitions assocs compiler.units math.parser
-generic sets command-line parser.notes ;
+USING: command-line compiler.units continuations definitions io
+io.pathnames kernel math math.parser memory namespaces parser
+parser.notes sequences sets splitting system
+vocabs vocabs.loader ;
 IN: bootstrap.stage2
 
 SYMBOL: core-bootstrap-time
diff --git a/basis/combinators/short-circuit/short-circuit.factor b/basis/combinators/short-circuit/short-circuit.factor
index 284e2a60d4c..f775c2f24cb 100644
--- a/basis/combinators/short-circuit/short-circuit.factor
+++ b/basis/combinators/short-circuit/short-circuit.factor
@@ -1,5 +1,5 @@
-USING: kernel combinators quotations arrays sequences assocs
-generalizations macros fry math ;
+USING: arrays combinators fry generalizations kernel macros
+math sequences ;
 IN: combinators.short-circuit
 
 <PRIVATE
diff --git a/basis/command-line/command-line.factor b/basis/command-line/command-line.factor
index 1ecac701dde..bbabed7b53e 100644
--- a/basis/command-line/command-line.factor
+++ b/basis/command-line/command-line.factor
@@ -1,10 +1,10 @@
 ! Copyright (C) 2003, 2009 Slava Pestov.
 ! See http://factorcode.org/license.txt for BSD license.
-USING: accessors alien.strings assocs continuations fry
-hashtables init io io.encodings.utf8 io.files io.pathnames
-kernel kernel.private namespaces parser parser.notes sequences
-source-files source-files.errors splitting strings system
-tools.errors vocabs.loader ;
+USING: accessors alien.strings assocs continuations fry init
+io.encodings.utf8 io.files io.pathnames kernel kernel.private
+namespaces parser parser.notes sequences source-files
+source-files.errors splitting system tools.errors
+vocabs.loader ;
 IN: command-line
 
 SYMBOL: user-init-errors
diff --git a/basis/tools/profiler/sampling/sampling.factor b/basis/tools/profiler/sampling/sampling.factor
index af1ddf378f7..dd1dd8402b6 100644
--- a/basis/tools/profiler/sampling/sampling.factor
+++ b/basis/tools/profiler/sampling/sampling.factor
@@ -1,11 +1,10 @@
 ! (c)2011 Joe Groff bsd license
 USING: accessors assocs calendar combinators
 combinators.short-circuit continuations fry generalizations
-hashtables.identity io kernel kernel.private locals math
-math.statistics math.vectors memory namespaces prettyprint
-sequences sequences.generalizations sets sorting
-tools.profiler.sampling.private math.parser.private
-math.parser layouts ;
+hashtables.identity io kernel kernel.private layouts locals
+math math.parser math.parser.private math.statistics
+math.vectors memory namespaces prettyprint sequences
+sequences.generalizations sets sorting ;
 FROM: sequences => change-nth ;
 FROM: assocs => change-at ;
 IN: tools.profiler.sampling
diff --git a/core/alien/alien.factor b/core/alien/alien.factor
index 56ac7b01c10..83c8fb41a6d 100755
--- a/core/alien/alien.factor
+++ b/core/alien/alien.factor
@@ -1,8 +1,7 @@
 ! Copyright (C) 2004, 2010 Slava Pestov.
 ! See http://factorcode.org/license.txt for BSD license.
-USING: accessors assocs kernel math namespaces sequences system
-kernel.private byte-arrays byte-vectors arrays init
-continuations.private ;
+USING: accessors byte-arrays byte-vectors continuations.private
+init kernel kernel.private math namespaces sequences ;
 IN: alien
 
 PREDICATE: pinned-alien < alien underlying>> not ;
diff --git a/core/arrays/arrays.factor b/core/arrays/arrays.factor
index 62a07744448..21f9c239fd9 100644
--- a/core/arrays/arrays.factor
+++ b/core/arrays/arrays.factor
@@ -1,7 +1,6 @@
 ! Copyright (C) 2005, 2010 Slava Pestov.
 ! See http://factorcode.org/license.txt for BSD license.
-USING: accessors kernel kernel.private math math.private
-sequences sequences.private ;
+USING: accessors kernel math sequences sequences.private ;
 IN: arrays
 
 M: array clone (clone) ; inline
diff --git a/core/assocs/assocs.factor b/core/assocs/assocs.factor
index d2b0a1f77f3..f2fee03997c 100644
--- a/core/assocs/assocs.factor
+++ b/core/assocs/assocs.factor
@@ -1,7 +1,7 @@
 ! Copyright (C) 2007, 2010 Daniel Ehrenberg, Slava Pestov
 ! See http://factorcode.org/license.txt for BSD license.
-USING: kernel sequences arrays math sequences.private vectors
-accessors ;
+USING: accessors arrays kernel math sequences sequences.private
+vectors ;
 IN: assocs
 
 MIXIN: assoc
diff --git a/core/checksums/checksums.factor b/core/checksums/checksums.factor
index 4c55358e56b..96df574b6fb 100644
--- a/core/checksums/checksums.factor
+++ b/core/checksums/checksums.factor
@@ -1,7 +1,7 @@
 ! Copyright (c) 2008 Slava Pestov
 ! See http://factorcode.org/license.txt for BSD license.
-USING: accessors io io.backend io.files kernel math math.parser
-sequences byte-arrays byte-vectors quotations ;
+USING: accessors byte-arrays byte-vectors io io.backend
+io.files kernel math math.parser sequences ;
 IN: checksums
 
 MIXIN: checksum
diff --git a/core/combinators/combinators.factor b/core/combinators/combinators.factor
index 76dd113976a..95a1b980eaf 100644
--- a/core/combinators/combinators.factor
+++ b/core/combinators/combinators.factor
@@ -1,8 +1,8 @@
 ! Copyright (C) 2006, 2010 Slava Pestov, Daniel Ehrenberg.
 ! See http://factorcode.org/license.txt for BSD license.
-USING: accessors arrays sequences sequences.private math.private
-kernel kernel.private math assocs quotations vectors
-hashtables sorting words sets math.order make ;
+USING: accessors arrays assocs hashtables kernel kernel.private
+make math math.order math.private quotations sequences
+sequences.private sets sorting words ;
 IN: combinators
 
 ! Most of these combinators have compile-time expansions in
diff --git a/core/compiler/units/units.factor b/core/compiler/units/units.factor
index fb7b6d505fc..004c7254703 100644
--- a/core/compiler/units/units.factor
+++ b/core/compiler/units/units.factor
@@ -1,9 +1,9 @@
 ! Copyright (C) 2008, 2010 Slava Pestov.
 ! See http://factorcode.org/license.txt for BSD license.
-USING: accessors arrays kernel continuations assocs namespaces
-sequences words vocabs definitions hashtables init sets math
-math.order classes classes.private classes.algebra classes.tuple
-classes.tuple.private generic source-files.errors kernel.private ;
+USING: accessors arrays assocs classes classes.private
+classes.tuple classes.tuple.private continuations definitions
+generic init kernel kernel.private math namespaces sequences
+sets source-files.errors vocabs words ;
 FROM: namespaces => set ;
 IN: compiler.units
 
diff --git a/core/continuations/continuations.factor b/core/continuations/continuations.factor
index b63e34262d7..ca2acbca46a 100644
--- a/core/continuations/continuations.factor
+++ b/core/continuations/continuations.factor
@@ -1,8 +1,7 @@
 ! Copyright (C) 2003, 2011 Slava Pestov.
 ! See http://factorcode.org/license.txt for BSD license.
-USING: arrays vectors kernel kernel.private sequences
-namespaces make math splitting sorting quotations assocs
-combinators combinators.private accessors words ;
+USING: accessors assocs combinators combinators.private kernel
+kernel.private make namespaces sequences vectors ;
 IN: continuations
 
 : with-datastack ( stack quot -- new-stack )
diff --git a/core/definitions/definitions.factor b/core/definitions/definitions.factor
index e255b161ee8..14870e92aad 100644
--- a/core/definitions/definitions.factor
+++ b/core/definitions/definitions.factor
@@ -1,6 +1,6 @@
 ! Copyright (C) 2006, 2010 Slava Pestov.
 ! See http://factorcode.org/license.txt for BSD license.
-USING: kernel sequences namespaces assocs math accessors ;
+USING: accessors assocs kernel namespaces sequences ;
 IN: definitions
 
 MIXIN: definition
diff --git a/core/generic/generic.factor b/core/generic/generic.factor
index 2ba2f412cd5..e9c9c349cfe 100644
--- a/core/generic/generic.factor
+++ b/core/generic/generic.factor
@@ -1,9 +1,9 @@
 ! Copyright (C) 2006, 2010 Slava Pestov.
 ! See http://factorcode.org/license.txt for BSD license.
-USING: accessors words kernel sequences namespaces make assocs
-hashtables definitions kernel.private classes classes.private
-classes.algebra quotations arrays vocabs effects combinators
-sets classes.maybe classes.algebra.private ;
+USING: accessors arrays assocs classes classes.algebra
+classes.algebra.private classes.maybe classes.private
+combinators definitions kernel make namespaces sequences sets
+words ;
 FROM: namespaces => set ;
 IN: generic
 
diff --git a/core/generic/hook/hook.factor b/core/generic/hook/hook.factor
index 17fd857b568..bdbc102e696 100644
--- a/core/generic/hook/hook.factor
+++ b/core/generic/hook/hook.factor
@@ -1,8 +1,7 @@
 ! Copyright (C) 2009 Slava Pestov.
 ! See http://factorcode.org/license.txt for BSD license.
-USING: accessors definitions generic generic.single
-generic.single.private kernel namespaces words kernel.private
-quotations sequences ;
+USING: accessors definitions generic generic.single kernel
+kernel.private namespaces quotations sequences words ;
 QUALIFIED-WITH: generic.single.private gsp
 IN: generic.hook
 
diff --git a/core/generic/math/math.factor b/core/generic/math/math.factor
index fa84c57b921..67701f2fb9e 100644
--- a/core/generic/math/math.factor
+++ b/core/generic/math/math.factor
@@ -1,9 +1,8 @@
 ! Copyright (C) 2005, 2009 Slava Pestov.
 ! See http://factorcode.org/license.txt for BSD license.
-USING: arrays generic hashtables kernel kernel.private math
-namespaces sequences words quotations layouts combinators
-sequences.private classes classes.builtin classes.algebra
-definitions math.order math.private assocs ;
+USING: arrays assocs classes classes.algebra combinators
+definitions generic kernel kernel.private math math.order
+math.private namespaces quotations sequences words ;
 IN: generic.math
 
 PREDICATE: math-class < class
diff --git a/core/generic/parser/parser.factor b/core/generic/parser/parser.factor
index f1c709d1121..fe8d9537939 100644
--- a/core/generic/parser/parser.factor
+++ b/core/generic/parser/parser.factor
@@ -1,7 +1,7 @@
 ! Copyright (C) 2008, 2009 Slava Pestov.
 ! See http://factorcode.org/license.txt for BSD license.
-USING: accessors arrays combinators effects effects.parser
-generic kernel namespaces parser quotations sequences words ;
+USING: accessors arrays combinators effects.parser generic
+kernel namespaces parser quotations sequences words ;
 IN: generic.parser
 
 ERROR: not-in-a-method-error ;
diff --git a/core/generic/single/single.factor b/core/generic/single/single.factor
index 82d373c5245..2ef68c9292c 100644
--- a/core/generic/single/single.factor
+++ b/core/generic/single/single.factor
@@ -1,10 +1,9 @@
 ! Copyright (C) 2009, 2010 Slava Pestov.
 ! See http://factorcode.org/license.txt for BSD license.
 USING: accessors arrays assocs classes classes.algebra
-combinators definitions generic hashtables kernel
-kernel.private layouts math namespaces quotations
-sequences words generic.single.private effects make
-combinators.private ;
+combinators combinators.private definitions effects generic
+hashtables kernel layouts make math namespaces quotations
+sequences words ;
 FROM: assocs => change-at ;
 IN: generic.single
 
diff --git a/core/generic/standard/standard.factor b/core/generic/standard/standard.factor
index 35d299145d7..e8b342e7777 100644
--- a/core/generic/standard/standard.factor
+++ b/core/generic/standard/standard.factor
@@ -1,9 +1,8 @@
 ! Copyright (C) 2009 Slava Pestov.
 ! See http://factorcode.org/license.txt for BSD license.
-USING: accessors definitions generic generic.single kernel
-namespaces words math math.order combinators sequences
-generic.single.private quotations kernel.private
-assocs arrays layouts make ;
+USING: accessors arrays combinators definitions generic
+generic.single generic.single.private kernel layouts make math
+namespaces quotations sequences words ;
 IN: generic.standard
 
 ERROR: bad-dispatch-position # ;
diff --git a/core/io/io.factor b/core/io/io.factor
index d4d54b88525..d0687e500de 100644
--- a/core/io/io.factor
+++ b/core/io/io.factor
@@ -1,7 +1,7 @@
 ! Copyright (C) 2003, 2010 Slava Pestov.
 ! See http://factorcode.org/license.txt for BSD license.
-USING: accessors alien byte-arrays combinators continuations destructors
-kernel math namespaces sequences sequences.private kernel.private ;
+USING: combinators destructors kernel kernel.private math
+namespaces sequences sequences.private ;
 IN: io
 
 SYMBOLS: +byte+ +character+ ;
diff --git a/core/math/parser/parser.factor b/core/math/parser/parser.factor
index 4514bb6b652..bae9f473fee 100644
--- a/core/math/parser/parser.factor
+++ b/core/math/parser/parser.factor
@@ -1,7 +1,7 @@
 ! (c)2009 Joe Groff bsd license
 USING: accessors byte-arrays combinators kernel kernel.private
-math namespaces sequences sequences.private splitting strings
-make ;
+make math namespaces sequences sequences.private splitting
+strings ;
 IN: math.parser
 
 : digit> ( ch -- n )
diff --git a/core/memory/memory.factor b/core/memory/memory.factor
index a1e977f5539..c9bef9a23f6 100644
--- a/core/memory/memory.factor
+++ b/core/memory/memory.factor
@@ -1,7 +1,7 @@
 ! Copyright (C) 2005, 2009 Slava Pestov.
 ! See http://factorcode.org/license.txt for BSD license.
-USING: alien.strings io.backend io.pathnames kernel
-memory.private sequences system ;
+USING: alien.strings io.backend kernel memory.private sequences
+system ;
 IN: memory
 
 : instances ( quot -- seq )
diff --git a/core/namespaces/namespaces.factor b/core/namespaces/namespaces.factor
index 467086abc6c..9029bb9a6a1 100644
--- a/core/namespaces/namespaces.factor
+++ b/core/namespaces/namespaces.factor
@@ -1,7 +1,7 @@
 ! Copyright (C) 2003, 2010 Slava Pestov.
 ! See http://factorcode.org/license.txt for BSD license.
-USING: kernel vectors sequences sequences.private hashtables
-arrays kernel.private math strings assocs ;
+USING: arrays assocs hashtables kernel kernel.private math
+sequences vectors ;
 SLOT: boxes
 SLOT: value
 FROM: accessors => boxes>> value>> value<< ;
diff --git a/core/parser/notes/notes.factor b/core/parser/notes/notes.factor
index e2ab2d14201..26bb2907429 100644
--- a/core/parser/notes/notes.factor
+++ b/core/parser/notes/notes.factor
@@ -1,6 +1,7 @@
 ! Copyright (C) 2009 Slava Pestov.
 ! See http://factorcode.org/license.txt for BSD license.
-USING: namespaces kernel source-files lexer accessors io math.parser ;
+USING: accessors io kernel lexer math.parser namespaces
+source-files ;
 IN: parser.notes
 
 SYMBOL: parser-quiet?
diff --git a/core/sequences/sequences.factor b/core/sequences/sequences.factor
index 5ab2579b1a4..6895b3a3487 100644
--- a/core/sequences/sequences.factor
+++ b/core/sequences/sequences.factor
@@ -1,7 +1,7 @@
 ! Copyright (C) 2005, 2011 Slava Pestov, Daniel Ehrenberg.
 ! See http://factorcode.org/license.txt for BSD license.
-USING: accessors kernel kernel.private slots.private math
-math.private math.order ;
+USING: accessors kernel kernel.private math math.order
+math.private slots.private ;
 IN: sequences
 
 MIXIN: sequence
diff --git a/core/sets/sets.factor b/core/sets/sets.factor
index 1c4a3446125..0e08bb2bfca 100644
--- a/core/sets/sets.factor
+++ b/core/sets/sets.factor
@@ -1,7 +1,6 @@
 ! Copyright (C) 2010 Daniel Ehrenberg
 ! See http://factorcode.org/license.txt for BSD license.
-USING: accessors assocs hashtables kernel vectors
-math sequences ;
+USING: assocs hashtables kernel math sequences vectors ;
 FROM: assocs => change-at ;
 IN: sets
 
diff --git a/core/splitting/splitting.factor b/core/splitting/splitting.factor
index 2011a244283..5ac6297ddc5 100644
--- a/core/splitting/splitting.factor
+++ b/core/splitting/splitting.factor
@@ -1,7 +1,6 @@
 ! Copyright (C) 2005, 2009 Slava Pestov.
 ! See http://factorcode.org/license.txt for BSD license.
-USING: kernel math make strings arrays vectors sequences
-sets math.order accessors ;
+USING: arrays kernel make math sequences sets strings ;
 IN: splitting
 
 <PRIVATE
diff --git a/core/system/system.factor b/core/system/system.factor
index 731cbd31087..595c439f0cc 100644
--- a/core/system/system.factor
+++ b/core/system/system.factor
@@ -1,7 +1,6 @@
 ! Copyright (C) 2007, 2010 Slava Pestov.
 ! See http://factorcode.org/license.txt for BSD license.
-USING: kernel kernel.private sequences math namespaces
-init splitting assocs system.private layouts words ;
+USING: assocs init kernel.private namespaces ;
 IN: system
 
 SINGLETONS: x86.32 x86.64 arm ppc.32 ppc.64 ;
diff --git a/core/vocabs/loader/loader.factor b/core/vocabs/loader/loader.factor
index 6a1f781713a..5e097ecc6c6 100644
--- a/core/vocabs/loader/loader.factor
+++ b/core/vocabs/loader/loader.factor
@@ -1,9 +1,8 @@
 ! Copyright (C) 2007, 2010 Eduardo Cavazos, Slava Pestov.
 ! See http://factorcode.org/license.txt for BSD license.
-USING: namespaces make sequences io io.files io.pathnames kernel
-assocs words vocabs definitions parser continuations hashtables
-sorting source-files arrays combinators strings system
-math.parser splitting init accessors sets ;
+USING: accessors arrays assocs continuations definitions init
+io io.files io.pathnames kernel make namespaces parser
+sequences sets splitting strings vocabs words ;
 IN: vocabs.loader
 
 SYMBOL: vocab-roots
diff --git a/core/vocabs/vocabs.factor b/core/vocabs/vocabs.factor
index f1fc12391ed..5067d88f50c 100644
--- a/core/vocabs/vocabs.factor
+++ b/core/vocabs/vocabs.factor
@@ -1,7 +1,7 @@
 ! Copyright (C) 2007, 2009 Eduardo Cavazos, Slava Pestov.
 ! See http://factorcode.org/license.txt for BSD license.
-USING: accessors assocs strings kernel sorting namespaces
-sequences definitions sets combinators splitting ;
+USING: accessors assocs definitions kernel namespaces sequences
+sets sorting splitting strings ;
 IN: vocabs
 
 SYMBOL: dictionary