diff --git a/library/inference/inference.factor b/library/inference/inference.factor
index 26a670170f..8ce7029641 100644
--- a/library/inference/inference.factor
+++ b/library/inference/inference.factor
@@ -1,8 +1,9 @@
 ! Copyright (C) 2004, 2005 Slava Pestov.
 ! See http://factor.sf.net/license.txt for BSD license.
 IN: inference
-USING: arrays errors generic interpreter io kernel lists math
-namespaces parser prettyprint sequences strings vectors words ;
+USING: arrays errors generic inspector interpreter io kernel
+lists math namespaces parser prettyprint sequences strings
+vectors words ;
 
 ! This variable takes a boolean value.
 SYMBOL: inferring-base-case
@@ -21,7 +22,7 @@ M: inference-error error. ( error -- )
     "! Inference error:" print
     dup inference-error-message print
     "! Recursive state:" print
-    inference-error-rstate sequence. ;
+    inference-error-rstate describe ;
 
 M: value literal-value ( value -- )
     {
diff --git a/library/syntax/prettyprint.factor b/library/syntax/prettyprint.factor
index 279822782a..c102ccafcb 100644
--- a/library/syntax/prettyprint.factor
+++ b/library/syntax/prettyprint.factor
@@ -316,10 +316,10 @@ M: wrapper pprint* ( wrapper -- )
 
 : pprint ( object -- ) [ pprint* ] with-pprint ;
 
-: unparse ( object -- str ) [ pprint ] string-out ;
-
 : . ( obj -- ) pprint terpri ;
 
+: unparse ( object -- str ) [ pprint ] string-out ;
+
 : pprint-short ( object -- string )
     [
         1 line-limit set
@@ -329,17 +329,7 @@ M: wrapper pprint* ( wrapper -- )
         pprint
     ] with-scope ;
 
-: unparse-short ( object -- str ) [ pprint-short ] string-out ;
-
-: short. ( object -- )
-    dup unparse-short swap write-object terpri ;
-
-: sequence. ( sequence -- ) [ short. ] each ;
-
-: stack. ( sequence -- ) reverse-slice sequence. ;
-
-: .s datastack stack. ;
-: .r callstack stack. ;
+: short. ( object -- ) pprint-short terpri ;
 
 ! For integers only
 : .b >bin print ;
diff --git a/library/tools/debugger.factor b/library/tools/debugger.factor
index c7493294eb..7adf8b100b 100644
--- a/library/tools/debugger.factor
+++ b/library/tools/debugger.factor
@@ -1,8 +1,8 @@
 ! Copyright (C) 2004, 2005 Slava Pestov.
 ! See http://factor.sf.net/license.txt for BSD license.
 IN: errors
-USING: generic kernel kernel-internals lists math namespaces
-parser prettyprint sequences io sequences-internals
+USING: generic inspector kernel kernel-internals lists math
+namespaces parser prettyprint sequences io sequences-internals
 strings vectors words ;
 
 : expired-error. ( obj -- )
@@ -100,8 +100,8 @@ M: string error. ( error -- ) print ;
 
 M: object error. ( error -- ) . ;
 
-: :s ( -- ) "error-datastack"  get stack. ;
-: :r ( -- ) "error-callstack"  get stack. ;
+: :s ( -- ) "error-datastack" stack. ;
+: :r ( -- ) "error-callstack" stack. ;
 
 : :get ( var -- value ) "error-namestack" get (get) ;
 
diff --git a/library/tools/inspector.factor b/library/tools/inspector.factor
index dddbb0e5ae..40e0885bbe 100644
--- a/library/tools/inspector.factor
+++ b/library/tools/inspector.factor
@@ -22,22 +22,34 @@ M: array sheet 1array ;
 M: hashtable sheet dup hash-keys swap hash-values 2array ;
 
 : format-column ( list -- list )
-    [ unparse-short ] map
+    [ [ pprint-short ] string-out ] map
     [ 0 [ length max ] reduce ] keep
     [ swap CHAR: \s pad-right ] map-with ;
 
-: sheet-numbers ( sheet -- sheet )
-    dup first length >array 1array swap append ;
-
-SYMBOL: inspector-slots
-
 : format-sheet ( sheet -- list )
-    sheet-numbers
-    dup peek inspector-slots set
-    [ format-column ] map
-    flip
-    [ " | " join ] map ;
+    [ format-column ] map flip [ " " join ] map ;
 
+: describe ( object -- )
+    sheet dup format-sheet swap peek
+    [ dup [ describe ] curry write-outliner ] 2each ;
+
+: word. ( word -- )
+    dup word-name swap dup [ see ] curry write-outliner ;
+
+: vocab. ( vocab -- )
+    f over [ words [ word. ] each ] curry write-outliner ;
+
+: browser ( -- )
+    #! Outlining word browser.
+    vocabs [ vocab. ] each ;
+
+: stack. ( seq -- seq )
+    reverse-slice >array describe ;
+
+: .s datastack stack. ;
+: .r callstack stack. ;
+
+! Interactive inspector
 GENERIC: extra-banner ( obj -- )
 
 M: word extra-banner ( word -- )
@@ -63,9 +75,11 @@ M: object extra-banner ( obj -- ) drop ;
     "It takes up " write dup size pprint " bytes of memory." print
     extra-banner ;
 
-: describe ( obj -- )
-    sheet dup format-sheet swap peek
-    [ write-object terpri ] 2each ;
+SYMBOL: inspector-slots
+
+: sheet-numbers ( sheet -- sheet )
+    dup first length >array 1array swap append
+    dup peek inspector-slots set ;
 
 SYMBOL: inspector-stack
 
@@ -73,7 +87,8 @@ SYMBOL: inspector-stack
 
 : (inspect) ( obj -- )
     dup inspector-stack get push
-    dup inspect-banner describe ;
+    dup inspect-banner
+    sheet sheet-numbers sheet. ;
 
 : inspector-help ( -- )
     "Object inspector." print
diff --git a/library/tools/walker.factor b/library/tools/walker.factor
index 5aa0ca39d4..2df49cddaa 100644
--- a/library/tools/walker.factor
+++ b/library/tools/walker.factor
@@ -1,8 +1,8 @@
 ! Copyright (C) 2004, 2005 Slava Pestov.
 ! See http://factor.sf.net/license.txt for BSD license.
 IN: interpreter
-USING: errors kernel listener lists math namespaces prettyprint
-sequences io strings vectors words ;
+USING: errors inspector kernel listener lists math namespaces
+prettyprint sequences io strings vectors words ;
 
 ! The single-stepper simulates Factor in Factor to allow
 ! single-stepping through the execution of a quotation. It can
diff --git a/library/ui/listener.factor b/library/ui/listener.factor
index af60dc39ab..a228f38bf1 100644
--- a/library/ui/listener.factor
+++ b/library/ui/listener.factor
@@ -6,8 +6,9 @@ DEFER: <tutorial-button>
 IN: gadgets-listener
 USING: gadgets gadgets-labels gadgets-layouts gadgets-panes
 gadgets-presentations gadgets-scrolling gadgets-splitters
-generic hashtables help io kernel listener lists math namespaces
-prettyprint sdl sequences shells styles threads words ;
+generic hashtables help inspector io kernel listener lists math
+namespaces prettyprint sdl sequences shells styles threads
+words ;
 
 SYMBOL: datastack-display
 SYMBOL: callstack-display
diff --git a/library/ui/presentations.factor b/library/ui/presentations.factor
index 6a560b36fb..127b32bd37 100644
--- a/library/ui/presentations.factor
+++ b/library/ui/presentations.factor
@@ -27,9 +27,6 @@ SYMBOL: commands
 : <command-button> ( gadget object -- button )
     [ nip command-menu ] curry <menu-button> ;
 
-: <object-button> ( object -- button )
-    [ unparse-short <label> ] keep <command-button> ;
-
 : init-commands ( gadget -- gadget )
     dup presented paint-prop [ <command-button> ] when* ;