diff --git a/basis/db/postgresql/postgresql.factor b/basis/db/postgresql/postgresql.factor
index e5e8097d3f..a002175ea8 100644
--- a/basis/db/postgresql/postgresql.factor
+++ b/basis/db/postgresql/postgresql.factor
@@ -4,9 +4,9 @@ USING: arrays assocs alien alien.syntax continuations io
 kernel math math.parser namespaces make prettyprint quotations
 sequences debugger db db.postgresql.lib db.postgresql.ffi
 db.tuples db.types tools.annotations math.ranges
-combinators classes locals words tools.walker db.private
-nmake accessors random db.queries destructors db.tuples.private
-db.postgresql db.errors.postgresql splitting ;
+combinators classes classes.tuple locals words tools.walker
+db.private nmake accessors random db.queries destructors
+db.tuples.private db.postgresql db.errors.postgresql splitting ;
 IN: db.postgresql
 
 TUPLE: postgresql-db host port pgopts pgtty database username password ;
diff --git a/basis/db/queries/queries.factor b/basis/db/queries/queries.factor
index 409a6e8ab9..522a62045e 100644
--- a/basis/db/queries/queries.factor
+++ b/basis/db/queries/queries.factor
@@ -1,7 +1,7 @@
 ! Copyright (C) 2008 Doug Coleman.
 ! See http://factorcode.org/license.txt for BSD license.
-USING: accessors arrays byte-arrays classes combinators
-continuations db db.errors db.private db.tuples
+USING: accessors arrays byte-arrays classes classes.tuple
+combinators continuations db db.errors db.private db.tuples
 db.tuples.private db.types destructors kernel make math
 math.bitwise math.intervals math.parser namespaces nmake
 prettyprint random sequences shuffle strings words fry ;
diff --git a/basis/db/types/types-docs.factor b/basis/db/types/types-docs.factor
index 8b62e7d4ae..2ac358982e 100644
--- a/basis/db/types/types-docs.factor
+++ b/basis/db/types/types-docs.factor
@@ -116,12 +116,6 @@ HELP: find-primary-key
 { $description "Returns the rows from the SQL specs array that are part of the primary key. Composite primary keys are supported, so this word must return a sequence." }
 { $notes "This is a low-level word." } ;
 
-HELP: get-slot-named
-{ $values
-     { "name" "a slot name" } { "tuple" tuple }
-     { "value" "the value stored in the slot" } }
-{ $description "Returns the value stored in a tuple slot, where the tuple slot is a string." } ;
-
 HELP: no-sql-type
 { $values
      { "type" "a SQL type" } }
@@ -132,12 +126,6 @@ HELP: normalize-spec
      { "spec" "a SQL spec" } }
 { $description "Normalizes a SQL spec." } ;
 
-HELP: offset-of-slot
-{ $values
-     { "string" string } { "tuple" tuple }
-     { "n" integer } }
-{ $description "Returns the offset of a tuple slot accessed by name." } ;
-
 HELP: primary-key?
 { $values
      { "spec" "a SQL spec" }
diff --git a/basis/db/types/types.factor b/basis/db/types/types.factor
index d6ab241778..222ac2a9f5 100644
--- a/basis/db/types/types.factor
+++ b/basis/db/types/types.factor
@@ -35,17 +35,6 @@ SYMBOL: IGNORE
     [ <mirror> [ nip IGNORE = ] assoc-filter keys ] dip
     [ slot-name>> swap member? not ] with filter ;
 
-ERROR: no-slot ;
-
-: offset-of-slot ( string tuple -- n )
-    class-of all-slots slot-named dup [ no-slot ] unless offset>> ;
-
-: get-slot-named ( name tuple -- value )
-    [ nip ] [ offset-of-slot ] 2bi slot ;
-
-: set-slot-named ( value name obj -- )
-    [ nip ] [ offset-of-slot ] 2bi set-slot ;
-
 ERROR: not-persistent class ;
 
 : db-table-name ( class -- object )
diff --git a/core/classes/tuple/tuple-docs.factor b/core/classes/tuple/tuple-docs.factor
index 7fd0cb0850..55edb5f969 100644
--- a/core/classes/tuple/tuple-docs.factor
+++ b/core/classes/tuple/tuple-docs.factor
@@ -1,7 +1,7 @@
 USING: generic help.markup help.syntax kernel
 classes.tuple.private classes slots quotations words arrays
 generic.standard sequences definitions compiler.units
-growable vectors sbufs assocs math ;
+growable vectors sbufs assocs math strings ;
 IN: classes.tuple
 
 ARTICLE: "slot-read-only-declaration" "Read-only slots"
@@ -448,3 +448,15 @@ HELP: boa
 
 HELP: bad-superclass
 { $error-description "Thrown if an attempt is made to subclass a class that is not a tuple class, or a tuple class declared " { $link POSTPONE: final } "." } ;
+
+HELP: offset-of-slot
+{ $values { "name" string } { "tuple" tuple } { "n" integer } }
+{ $description "Returns the offset of a tuple slot accessed by " { $snippet "name" } "." } ;
+
+HELP: get-slot-named
+{ $values { "name" string } { "tuple" tuple } { "value" object } }
+{ $description "Returns the " { $snippet "value" } " stored in a tuple slot accessed by " { $snippet "name" } "." } ;
+
+HELP: set-slot-named
+{ $values { "value" object } { "name" string } { "tuple" tuple } }
+{ $description "Stores the " { $snippet "value" } " into a tuple slot accessed by " { $snippet "name" } "." } ;
diff --git a/core/classes/tuple/tuple.factor b/core/classes/tuple/tuple.factor
index dd7c63dea4..c92a1fe6cb 100644
--- a/core/classes/tuple/tuple.factor
+++ b/core/classes/tuple/tuple.factor
@@ -16,6 +16,17 @@ ERROR: not-a-tuple object ;
 : all-slots ( class -- slots )
     superclasses [ "slots" word-prop ] map concat ;
 
+ERROR: no-slot ;
+
+: offset-of-slot ( name tuple -- n )
+    class-of all-slots slot-named dup [ no-slot ] unless offset>> ;
+
+: get-slot-named ( name tuple -- value )
+    [ nip ] [ offset-of-slot ] 2bi slot ;
+
+: set-slot-named ( value name tuple -- )
+    [ nip ] [ offset-of-slot ] 2bi set-slot ;
+
 PREDICATE: immutable-tuple-class < tuple-class
     all-slots [ read-only>> ] all? ;