Recketizing much in `net/*', mass ".ss" -> ".rkt" conversion in .scrbl files.

(Some other minor things here and there.)

collects/compiler/cffi.scrbl

@@ -264,7 +264,7 @@ sequence.
 
 The @racket[code] code will appear on a new line in the file for C
 compilation. Multiple @racket[c-include] declarations are concatenated
-(with newlines) in order to produces a sequence of declarations.}
+(with newlines) in order to produce a sequence of declarations.}
 
 @defform[(c-include path-spec)]{
 

collects/deinprogramm/scribblings/DMdA-advanced.scrbl

@@ -1,7 +1,5 @@
 #lang scribble/doc
-@(require scribblings/htdp-langs/common
+@(require scribblings/htdp-langs/common "std-grammar.rkt" "prim-ops.rkt"
-	  "std-grammar.ss"
-	  "prim-ops.ss"
           (for-label deinprogramm/DMdA-assignments))
 
 @title[#:style 'toc #:tag "DMdA-advanced"]{Die Macht der Abstraktion fortgeschritten}
@@ -35,7 +33,7 @@ Abstraktion - fortgeschritten} that goes with the German textbook
 
 @|prim-nonterms|
 
-@prim-ops['(lib "DMdA-advanced.ss" "deinprogramm") #'here]
+@prim-ops['(lib "DMdA-advanced.rkt" "deinprogramm") #'here]
 
 @section[#:tag "advanced-quote"]{Quote-Literal}
 
@@ -54,4 +52,4 @@ Signatur für Symbole.
 
 @section[#:tag "advanced-prim-op"]{Primitive Operationen}
 
-@prim-op-defns['(lib "DMdA-advanced.ss" "deinprogramm") #'here '()]
+@prim-op-defns['(lib "DMdA-advanced.rkt" "deinprogramm") #'here '()]

collects/deinprogramm/scribblings/DMdA-assignments.scrbl

@@ -1,8 +1,8 @@
 #lang scribble/doc
-@(require scribblings/htdp-langs/common
+@(require scribblings/htdp-langs/common "std-grammar.rkt" "prim-ops.rkt"
-	  "std-grammar.ss"
+          (for-label deinprogramm/DMdA-assignments
-	  "prim-ops.ss"
+                     (only-in deinprogramm/DMdA-beginner
-          (for-label deinprogramm/DMdA-assignments (only-in deinprogramm/DMdA-beginner define-record-procedures-parametric)))
+                              define-record-procedures-parametric)))
 
 @title[#:style 'toc #:tag "DMdA-assignments"]{Die Macht der Abstraktion mit Zuweisungen}
 
@@ -28,7 +28,7 @@ Abstraktion mit Zuweisungen} to go with the German textbook
 
 @|prim-nonterms|
 
-@prim-ops['(lib "DMdA-assignments.ss" "deinprogramm") #'here]
+@prim-ops['(lib "DMdA-assignments.rkt" "deinprogramm") #'here]
 
 @section{@scheme[define-record-procedures-2]}
 
@@ -105,4 +105,4 @@ gebunden.}
 
 @section[#:tag "assignments-prim-op"]{Primitive Operationen}
 
-@prim-op-defns['(lib "DMdA-assignments.ss" "deinprogramm") #'here '()]
+@prim-op-defns['(lib "DMdA-assignments.rkt" "deinprogramm") #'here '()]

collects/deinprogramm/scribblings/DMdA-beginner.scrbl

@@ -1,8 +1,6 @@
 #lang scribble/doc
-@(require scribblings/htdp-langs/common
+@(require scribblings/htdp-langs/common scribble/struct
-	  scribble/struct
+          "std-grammar.rkt" "prim-ops.rkt"
-	  "std-grammar.ss"
-	  "prim-ops.ss"
           (for-label deinprogramm/DMdA-beginner))
 
 @title[#:style 'toc #:tag "DMdA-beginner"]{Die Macht der Abstraktion - Anfänger}
@@ -20,7 +18,7 @@ Macht der Abstraktion}.
 
 @|prim-nonterms|
 
-@prim-ops['(lib "DMdA-beginner.ss" "deinprogramm") #'here]
+@prim-ops['(lib "DMdA-beginner.rkt" "deinprogramm") #'here]
 
 @; ----------------------------------------------------------------------
 
@@ -441,4 +439,4 @@ Eigenschaft: @scheme[(==> c p)] legt fest, daß die Eigenschaft
 @section[#:tag "beginner-prim-ops"]{Primitive Operationen}
 
 @declare-exporting[deinprogramm/DMdA-beginner]
-@prim-op-defns['(lib "DMdA-beginner.ss" "deinprogramm") #'here '()]
+@prim-op-defns['(lib "DMdA-beginner.rkt" "deinprogramm") #'here '()]

collects/deinprogramm/scribblings/DMdA-vanilla.scrbl

@@ -1,7 +1,5 @@
 #lang scribble/doc
-@(require scribblings/htdp-langs/common
+@(require scribblings/htdp-langs/common "std-grammar.rkt" "prim-ops.rkt"
-	  "std-grammar.ss"
-	  "prim-ops.ss"
           (for-label deinprogramm/DMdA-vanilla
                      (only-in deinprogramm/DMdA-beginner define)))
 
@@ -20,7 +18,7 @@ Abstraktion}.
 
 @|prim-nonterms|
 
-@prim-ops['(lib "DMdA-vanilla.ss" "deinprogramm") #'here]
+@prim-ops['(lib "DMdA-vanilla.rkt" "deinprogramm") #'here]
 
 @section[#:tag "signatures-vanilla"]{Signaturen}
 
@@ -77,5 +75,4 @@ sich also auf das @scheme[a] aus dem @scheme[let*]-Ausdruck, nicht das
 
 @section[#:tag "vanilla-prim-op"]{Primitive Operationen}
 
-@prim-op-defns['(lib "DMdA-vanilla.ss" "deinprogramm") #'here '()]
+@prim-op-defns['(lib "DMdA-vanilla.rkt" "deinprogramm") #'here '()]
-

collects/deinprogramm/scribblings/image.scrbl

@@ -1,12 +1,11 @@
 #lang scribble/doc
 
-@(require scribble/manual "shared.ss"
+@(require scribble/manual "shared.rkt"
-          (for-label scheme
+          (for-label scheme teachpack/deinprogramm/image))
-                     teachpack/deinprogramm/image))
 
 @teachpack["image"]{Bilder konstruieren}
 
-Note: This is documentation for the @tt{image.ss} teachpack that goes
+Note: This is documentation for the @filepath{image.rkt} teachpack that goes
 with the German textbook
 @italic{@link["http://www.deinprogramm.de/dmda/"]{Die Macht der
 Abstraktion}}.

collects/deinprogramm/scribblings/line3d.scrbl

@@ -1,13 +1,13 @@
 #lang scribble/doc
 
-@(require scribble/manual "shared.ss"
+@(require scribble/manual "shared.rkt"
           (for-label scheme
                      teachpack/deinprogramm/image
                      teachpack/deinprogramm/line3d))
 
 @teachpack["line3d"]{3D-Liniengraphik}
 
-Note: This is documentation for the @tt{line3d.ss} teachpack that goes
+Note: This is documentation for the @filepath{line3d.rkt} teachpack that goes
 with the German textbook
 @italic{@link["http://www.deinprogramm.de/dmda/"]{Die Macht der
 Abstraktion}}.

collects/deinprogramm/scribblings/sound.scrbl

@@ -1,14 +1,11 @@
 #lang scribble/doc
 
-@(require scribble/manual
+@(require scribble/manual scribble/struct "shared.rkt"
-          "shared.ss"
+          (for-label scheme teachpack/deinprogramm/sound))
-	  scribble/struct
-          (for-label scheme
-                     teachpack/deinprogramm/sound))
 
 @teachpack["sound"]{Abspielen von Audio-Dateien}
 
-Note: This is documentation for the @tt{sound.ss} teachpack that goes
+Note: This is documentation for the @filepath{sound.rkt} teachpack that goes
 with the German textbook
 @italic{@link["http://www.deinprogramm.de/dmda/"]{Die Macht der
 Abstraktion}}.

collects/deinprogramm/scribblings/turtle.scrbl

@@ -1,15 +1,13 @@
 #lang scribble/doc
 
-@(require scribble/manual
+@(require scribble/manual scribble/struct "shared.rkt"
-          "shared.ss"
-	  scribble/struct
           (for-label scheme
                      teachpack/deinprogramm/image
                      teachpack/deinprogramm/turtle))
 
 @teachpack["turtle"]{Turtle-Grafik}
 
-Note: This is documentation for the @tt{turtle.ss} teachpack that goes
+Note: This is documentation for the @filepath{turtle.rkt} teachpack that goes
 with the German textbook
 @italic{@link["http://www.deinprogramm.de/dmda/"]{Die Macht der
 Abstraktion}}.

collects/deinprogramm/scribblings/world.scrbl

@@ -1,15 +1,13 @@
 #lang scribble/doc
 
-@(require scribble/manual
+@(require scribble/manual scribble/struct "shared.rkt"
-          "shared.ss"
-	  scribble/struct
           (for-label scheme
                      teachpack/deinprogramm/image
                      teachpack/deinprogramm/world))
 
 @teachpack["world"]{Animationen}
 
-Note: This is documentation for the @tt{world.ss} teachpack that goes
+Note: This is documentation for the @filepath{world.rkt} teachpack that goes
 with the German textbook
 @italic{@link["http://www.deinprogramm.de/dmda/"]{Die Macht der
 Abstraktion}}.

collects/embedded-gui/scribblings/aligned-pasteboard.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @defclass/title[aligned-pasteboard% pasteboard% (alignment-parent<%>)]{
 

collects/embedded-gui/scribblings/alignment-parent.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @definterface/title[alignment-parent<%> ()]{
 

collects/embedded-gui/scribblings/alignment.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @definterface/title[alignment<%> (dllist<%>)]{
 

collects/embedded-gui/scribblings/button-snip.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @defclass/title[button-snip% snip% ()]{
 

collects/embedded-gui/scribblings/containers.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @title[#:tag "containers" #:style 'toc]{Containers}
 

collects/embedded-gui/scribblings/control-snips.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @title[#:tag "control-snips" #:style 'toc]{Control Snips}
 

collects/embedded-gui/scribblings/controls.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @title[#:tag "controls" #:style 'toc]{Controls}
 

collects/embedded-gui/scribblings/dllist.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @definterface/title[dllist<%> ()]{
 

collects/embedded-gui/scribblings/embedded-button.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @defclass/title[embedded-button% snip-wrapper% (alignment<%>)]{
 

collects/embedded-gui/scribblings/embedded-gui.scrbl

@@ -1,6 +1,5 @@
 #lang scribble/doc
-@(require "common.ss"
+@(require "common.rkt" (for-label framework))
-          (for-label framework))
 
 @title{@bold{Embedded GUI}: Widgets within @scheme[editor<%>]}
 

collects/embedded-gui/scribblings/embedded-message.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @defclass/title[embedded-message% snip-wrapper% ()]{
 

collects/embedded-gui/scribblings/embedded-text-button.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @defclass/title[embedded-text-button% snip-wrapper% (alignment<%>)]{
 

collects/embedded-gui/scribblings/embedded-toggle-button.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @defclass/title[embedded-toggle-button% snip-wrapper% (alignment<%>)]{
 

collects/embedded-gui/scribblings/hline.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @defclass/title[hline% snip-wrapper% (alignment<%>)]{
 
@@ -8,4 +8,3 @@ Displays a horizontal line across the region that is inserted into.
 @defconstructor[([parent (is-a?/c alignment-parent<%>)])]{
 }
 }
-

collects/embedded-gui/scribblings/horizontal-alignment.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @defclass/title[horizontal-alignment% dllist<%> (alignment<%> alignment-parent<%>)]{
 

collects/embedded-gui/scribblings/snip-procs.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @title[#:tag "snip-related-functions"]{Snip Functions}
 

collects/embedded-gui/scribblings/snip-wrapper.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @defclass/title[snip-wrapper% dllist<%> (alignment<%>)]{
 

collects/embedded-gui/scribblings/stretchable-snip.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @definterface/title[stretchable-snip<%> ()]{
 

collects/embedded-gui/scribblings/text-button-snip.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @defclass/title[text-button-snip% snip% ()]{
 

collects/embedded-gui/scribblings/toggle-button-snip.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @defclass/title[toggle-button-snip% snip% ()]{
 

collects/embedded-gui/scribblings/vertical-alignment.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @defclass/title[vertical-alignment% dllist<%> (alignment<%> alignment-parent<%>)]{
 

collects/embedded-gui/scribblings/vline.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @defclass/title[vline% snip-wrapper% (alignment<%>)]{
 
@@ -8,4 +8,3 @@ Displays a vertical line across the region that is inserted into.
 @defconstructor[([parent (is-a?/c alignment-parent<%>)])]{
 }
 }
-

collects/errortrace/scribblings/errortrace.scrbl

@@ -318,7 +318,7 @@ procedure is suitable for use as a compilation handler via
          (-> any/c any/c compiled-expression)]{
 
 Produces a compile handler that is like
-@scheme[errortrace-compile-handler], except that the code that the
+@scheme[errortrace-compile-handler], except that the code that
 it produces is instrumented if the value of
 @schemeblock[(namespace-module-registry (current-namespace))]
 is the same as when the original thunk is invoked.

collects/file/scribblings/file.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @title{@bold{File}: Racket File Format Libraries}
 

collects/file/scribblings/gunzip.scrbl

@@ -1,7 +1,5 @@
 #lang scribble/doc
-@(require "common.ss"
+@(require "common.rkt" (for-label file/gunzip file/gzip))
-          (for-label file/gunzip
-                     file/gzip))
 
 @title[#:tag "gunzip"]{@exec{gzip} Decompression}
 

collects/file/scribblings/gzip.scrbl

@@ -1,6 +1,5 @@
 #lang scribble/doc
-@(require "common.ss"
+@(require "common.rkt" (for-label file/gzip))
-          (for-label file/gzip))
 
 @title[#:tag "gzip"]{@exec{gzip} Compression and File Creation}
 

collects/file/scribblings/md5.scrbl

@@ -1,7 +1,5 @@
 #lang scribble/doc
-@(require "common.ss"
+@(require "common.rkt" scribble/eval (for-label file/md5))
-          scribble/eval
-          (for-label file/md5))
 
 @(define md5-eval (make-base-eval))
 @interaction-eval[#:eval md5-eval (require file/md5)]

collects/file/scribblings/resource.scrbl

@@ -1,6 +1,5 @@
 #lang scribble/doc
-@(require "common.ss"
+@(require "common.rkt" (for-label file/resource))
-          (for-label file/resource))
 
 @(define-syntax-rule (compat file section indexed-racket what)
    @elem{For backward compatibilty, the

collects/file/scribblings/sha1.scrbl

@@ -1,7 +1,5 @@
 #lang scribble/doc
-@(require "common.ss"
+@(require "common.rkt" scribble/eval (for-label file/sha1))
-          scribble/eval
-          (for-label file/sha1))
 
 @(define sha1-eval (make-base-eval))
 @interaction-eval[#:eval sha1-eval (require file/sha1)]

collects/file/scribblings/tar.scrbl

@@ -1,6 +1,5 @@
 #lang scribble/doc
-@(require "common.ss"
+@(require "common.rkt" (for-label file/tar file/gzip))
-          (for-label file/tar file/gzip))
 
 @title[#:tag "tar"]{@exec{tar} File Creation}
 

collects/file/scribblings/zip.scrbl

@@ -1,8 +1,5 @@
 #lang scribble/doc
-@(require "common.ss"
+@(require "common.rkt" (for-label file/zip file/gunzip scheme/file))
-          (for-label file/zip
-                     file/gunzip
-                     scheme/file))
 
 @title[#:tag "zip"]{@exec{zip} File Creation}
 

collects/frtime/scribblings/frtime.scrbl

@@ -407,34 +407,34 @@ To run the following animation/GUI demos, simply set the language
 level to FrTime, open the corresponding file, and Execute.  See the
 demo source code for more information.
 
-@scheme[orbit-mouse.ss] : A collection of balls that move in circles
+@scheme[orbit-mouse.rkt] : A collection of balls that move in circles
 around the mouse pointer.
 
-@scheme[piston.ss] : Simulation of a piston/cylinder.
+@scheme[piston.rkt] : Simulation of a piston/cylinder.
 
-@scheme[rotation.ss] : Balls moving in circles.
+@scheme[rotation.rkt] : Balls moving in circles.
 
-@scheme[delay-mouse.ss] : A trail of balls following the mouse.
+@scheme[delay-mouse.rkt] : A trail of balls following the mouse.
 
-@scheme[ball-on-string.ss] : A ball chasing the mouse.
+@scheme[ball-on-string.rkt] : A ball chasing the mouse.
 
-@scheme[pong.ss] : A simple pong/air-hockey game.  The left paddle moves with
+@scheme[pong.rkt] : A simple pong/air-hockey game.  The left paddle moves with
 numeric keypad; the right paddle moves with the mouse.  The 'r' key
 resets the score.
 
-@scheme[pizza.ss] : A simple "pizza ordering" user interface based on an HtDP
+@scheme[pizza.rkt] : A simple "pizza ordering" user interface based on an HtDP
 exercise.
 
-@scheme[calculator.ss] : A simple calculator interface, also based on an HtDP
+@scheme[calculator.rkt] : A simple calculator interface, also based on an HtDP
 exercise except that the result updates continuously as the arguments
 and operator change.
 
 The next three animation examples are courtesy of Robb Cutler:
 
-@scheme[analog-clock.ss] : An animated real-time clock.  A slider adjusts the radius
+@scheme[analog-clock.rkt] : An animated real-time clock.  A slider adjusts the
-of the face.  Click and drag to move the face around.
+radius of the face.  Click and drag to move the face around.
 
-@scheme[growing-points.ss] : A field of points that grow as the mouse approaches.
+@scheme[growing-points.rkt] : A field of points that grow as the mouse
-
+approaches.
-@scheme[needles.ss] : A field of needles that point at the mouse.
 
+@scheme[needles.rkt] : A field of needles that point at the mouse.

collects/games/scribblings/aces.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @gametitle["Aces" "aces" "Solitaire Card Game"]
 

collects/games/scribblings/blackjack.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @gametitle["Blackjack" "blackjack" "21 Card Game"]
 

collects/games/scribblings/checkers.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @gametitle["Checkers" "checkers" "Board Game"]
 

collects/games/scribblings/crazy8s.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @gametitle["Crazy 8s" "crazy8s" "Card Game"]
 

collects/games/scribblings/games.scrbl

@@ -1,9 +1,7 @@
 #lang scribble/doc
-@(require "common.ss"
+@(require "common.rkt"
-          (for-label scheme/base
+          (for-label scheme/base scheme/contract
-                     scheme/contract
+                     games/show-help games/show-scribbling))
-                     games/show-help
-                     games/show-scribbling))
 
 @title{@bold{Games}: Fun Examples}
 
@@ -24,8 +22,8 @@ installed as sub-collections of the @filepath{games} collection (see
 
 The game-starting console inspects the sub-collections of the
 @filepath{games} collection. If a sub-collection has an
-@filepath{info.ss} module (see @schememodname[setup/infotab]), the
+@filepath{info.rkt} module (see @schememodname[setup/infotab]), the
-following fields of the collection's "info.ss" file are used:
+following fields of the collection's @filepath{info.rkt} file are used:
 
 @itemize[
 

collects/games/scribblings/gcalc.scrbl

@@ -1,12 +1,10 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
-@(define Lambda "\u3BB")
+@gametitle["GCalc" "gcalc" "Visual λ-Calculus"]
-
-@gametitle["GCalc" "gcalc" "Visual \u3BB-Calculus"]
 
 @onscreen{GCalc} is a system for visually demonstrating the
-@|Lambda|-Calculus (not really a game).
+λ-Calculus (not really a game).
 
 See the following for the principles:
 
@@ -60,22 +58,22 @@ undo feature: a right-click on the right cell always splits the main
 cube to two halves and throws the right side.
 
 The colored cubes and the six basic operators make this simple domain,
-which is extended to form a @|Lambda|-Calculus-like language by adding
+which is extended to form a λ-Calculus-like language by adding
 abstractions and applications.  Right-clicking on a basic cube on the
 left panel creates an abstraction which is actually a lambda
 expression except that colors are used instead of syntactic variables.
 For example, if the main cell contains @onscreen{R|G} (red-green on
 the left and right), then right-clicking the green cube on the left
-panel leaves us with @onscreen{@|Lambda| G . R|G}, which is visualized
+panel leaves us with @onscreen{λ G . R|G}, which is visualized
 as @onscreen{R|G} with a green circle.  The last two operator cells
 are used for application of these abstractions: drag a function to the
 top-right to have it applied on the main cube, or to the bottom-left
-to have the main cube applied to it.  As in the @|Lambda|-Calculus,
+to have the main cube applied to it.  As in the λ-Calculus,
 all abstractions have exactly one variable, use currying for multiple
 variables.
 
 So far the result is a domain of colored cubes that can be used in the
-same way as the simple @|Lambda|-Calculus.  There is one last
+same way as the simple λ-Calculus.  There is one last
 extension that goes one step further: function cubes can themselves be
 combined with other functions using the simple operations.  This
 results in a form of "spatial functions" that behave differently in

collects/games/scribblings/ginrummy.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @gametitle["Rummy" "ginrummy" "Card Game"]
 

collects/games/scribblings/gobblet.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @gametitle["Gobblet" "gobblet" "Strategy Game"]
 

collects/games/scribblings/gofish.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @gametitle["Go Fish" "gofish" "Kid's Card Game"]
 

collects/games/scribblings/jewel.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @gametitle["Jewel" "jewel" "3-D Skill Game"]
 

collects/games/scribblings/lights-out.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @gametitle["Lights Out" "lights-out" "Logic Game"]
 

collects/games/scribblings/memory.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @gametitle["Memory" "memory" "Kid's Game"]
 

collects/games/scribblings/mines.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @gametitle["Minesweeper" "mines" "Logic Game"]
 

collects/games/scribblings/paint-by-numbers.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @gametitle["Paint By Numbers" "paint-by-numbers" "Logic Game"]
 

collects/games/scribblings/parcheesi.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @gametitle["Parcheesi" "parcheesi" "Board Game"]
 

collects/games/scribblings/pousse.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @gametitle["Pousse" "pousse" "Tic-Tac-Toe-like Game"]
 

collects/games/scribblings/same.scrbl

@@ -1,8 +1,5 @@
 #lang scribble/doc
-@(require "common.ss"
+@(require "common.rkt" racket/class racket/draw (only-in slideshow/pict dc)
-          racket/class
-          racket/draw
-          (only-in slideshow/pict dc) 
           "../same/same-lib.rkt")
 
 @(define board-width 6)

collects/games/scribblings/slidey.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @gametitle["Slidey" "slidey" "Picture Puzzle"]
 

collects/games/scribblings/spider.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @gametitle["Spider" "spider" "Solitaire Card Game"]
 

collects/games/scribblings/std-games.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @title[#:style 'toc #:tag "bundled"]{Bundled Games}
 

collects/graphics/scribblings/graphics.scrbl

@@ -1,9 +1,9 @@
 #lang scribble/doc
-@(require "common.ss"
+@(require "common.rkt"
-          (for-label "../graphics.ss"
+          (for-label "../graphics.rkt"
-                     "../graphics-sig.ss"
+                     "../graphics-sig.rkt"
-                     "../graphics-unit.ss"
+                     "../graphics-unit.rkt"
-                     "../graphics-posn-less-unit.ss"))
+                     "../graphics-posn-less-unit.rkt"))
 
 @title{@bold{Graphics}: Legacy Library}
 

collects/graphics/scribblings/traditional-turtles.scrbl

@@ -1,7 +1,5 @@
 #lang scribble/doc
-@(require "common.ss"
+@(require "common.rkt" (for-label "../turtles.rkt" "../turtle-examples.rkt"))
-          (for-label "../turtles.ss"
-                     "../turtle-examples.ss"))
 
 @title{Traditional Turtles}
 

collects/graphics/scribblings/value-turtles.scrbl

@@ -1,7 +1,5 @@
 #lang scribble/doc
-@(require "common.ss"
+@(require "common.rkt" (for-label "../value-turtles.rkt"))
-          (for-label "../value-turtles.ss"))
-                     
 
 @title{Value Turtles}
 

collects/lazy/lazy.scrbl

@@ -160,7 +160,7 @@ Similar to @scheme[!list] but also forces (using @scheme[!]) the
 elements of the list.}
 
 
-@;{ This moved into lazy.ss, and all the other forces will move there too.
+@;{ This moved into lazy.rkt, and all the other forces will move there too.
 
 @subsection{Multiple values}
 

collects/make/make.scrbl

@@ -1,16 +1,9 @@
 #lang scribble/doc
 @(require scribble/manual
-          (for-label scheme/base
+          (for-label scheme/base scheme/contract scheme/unit
-                     scheme/contract
+                     make make/make-unit make/make-sig
-                     scheme/unit
+                     make/collection make/collection-sig make/collection-unit
-                     make
+                     dynext/file-sig compiler/sig))
-                     make/make-unit
-                     make/make-sig
-                     make/collection
-                     make/collection-sig
-                     make/collection-unit
-                     dynext/file-sig
-                     compiler/sig))
 
 @(define raco-manual @other-manual['(lib "scribblings/raco/raco.scrbl")])
 
@@ -348,11 +341,12 @@ The arguments are as follows:
     supply @scheme['("wsock32")].}
 
   @item{@scheme[extra-depends] --- a list of relative paths to treat as
-    dependencies for compiling `file.c'. Often this list will include
+    dependencies for compiling @filepath{file.c}. Often this list will
-    `file.c' with the ".c" suffix replaced by ".ss" or ".scm". For
+    include @filepath{file.c} with the @filepath{.c} suffix replaced by
-    example, the "openssl" installer supplies '("mzssl.ss") to ensure
+    @filepath{.rkt}.  For example, the "openssl" installer supplies
-    that the stub module "mzssl.ss" is never used when the true
+    @scheme['("mzssl.rkt")] to ensure that the stub module
-    extension can be built.}
+    @filepath{mzssl.rkt} is never used when the true extension can be
+    built.}
 
   @item{@scheme[last-chance-k] --- a procedure of one argument, which
     is a thunk.  This procedure should invoke the thunk to make the

collects/mrlib/private/aligned-pasteboard/tests/actual-bigger.rktl

@@ -1,11 +1,7 @@
-(require
+(require mzlib/class mzlib/list mred mzlib/etc
- mzlib/class
+         "../aligned-editor-container.rkt"
- mzlib/list
+         "../aligned-pasteboard.rkt"
- mred
+         "../snip-lib.rkt")
- mzlib/etc
- "../aligned-editor-container.ss"
- "../aligned-pasteboard.ss"
- "../snip-lib.ss")
 
 (define f (new frame% (label "test") (width 200) (height 200)))
 (define e (new text%))

collects/mrlib/private/aligned-pasteboard/tests/edit-sequence-loop.rktl

@@ -1,6 +1,4 @@
-(require
+(require "../aligned-pasteboard.rkt" "../aligned-editor-container.rkt")
- "../aligned-pasteboard.ss"
- "../aligned-editor-container.ss")
 
 (define (converges? x) #t)
 

collects/mrlib/private/aligned-pasteboard/tests/test-alignment.rktl

@@ -1,10 +1,4 @@
-
+(require mzlib/etc mzlib/list mzlib/match "../alignment.rkt" "test-macro.rkt")
-(require
- mzlib/etc
- mzlib/list
- mzlib/match
- "../alignment.ss"
- "test-macro.ss")
 
 ;;los-equal? ((listof rect?) (listof rect?) . -> . boolean?)
 ;;tests the equality of the list of structures

collects/mrlib/private/aligned-pasteboard/tests/test-pasteboard-lib.rktl

@@ -1,14 +1,9 @@
+(require mzlib/etc mzlib/class "test-macro.rkt" mred
+         "../pasteboard-lib.rkt"
+         "../aligned-pasteboard.rkt"
+         "../aligned-editor-container.rkt")
 
-(require
+;; (printf "running tests for pasteboard-lib.rkt\n")
- mzlib/etc
- mzlib/class
- "test-macro.ss"
- mred
- "../pasteboard-lib.ss"
- "../aligned-pasteboard.ss"
- "../aligned-editor-container.ss")
-
-;; (printf "running tests for pasteboard-lib.ss\n")
 
 ;;pasteboard-root: ((is-a?/c aligned-pasteboard<%>) -> (is-a?/c aligned-pasteboard<%>))
 ;;gets the top most aligned pasteboard in the tree of pasteboards and containers

collects/mrlib/private/aligned-pasteboard/tests/test-snip-lib.rktl

@@ -1,14 +1,9 @@
+(require mzlib/etc mzlib/class mred "test-macro.rkt"
+         "../snip-lib.rkt"
+         "../aligned-pasteboard.rkt"
+         "../aligned-editor-container.rkt")
 
-(require
+;;(printf "running tests for snip-lib.rkt\n")
- mzlib/etc
- mzlib/class
- mred
- "../snip-lib.ss"
- "../aligned-pasteboard.ss"
- "../aligned-editor-container.ss"
- "test-macro.ss")
-
-;;(printf "running tests for snip-lib.ss\n")
 
 ;;snip-width: ((is-a?/c aligned-pasteboard<%>) (is-a?/c snip%) . -> . number?)
 ;;the width of a snip in the given pasteboard

collects/mrlib/private/aligned-pasteboard/tests/test.rktl

@@ -1,12 +1,7 @@
-(require
+(require mzlib/class mred mzlib/etc mzlib/list
- mzlib/class
+         "../aligned-pasteboard.rkt"
- mred
+         "../aligned-editor-container.rkt"
- mzlib/etc
+         "snip-dumper.rkt")
- mzlib/list
- "../aligned-pasteboard.ss"
- "../aligned-editor-container.ss"
- "snip-dumper.ss")
-
 
 
 ;                                     ;;                 
@@ -21,7 +16,7 @@
 ;                             ;                          
 ;                            ;;;                         
 
-(printf "running test1.ss\n")
+(printf "running test.rktl\n")
 
 (define frame
   (instantiate frame% ()

collects/mrlib/private/aligned-pasteboard/tests/test2.rktl

@@ -1,11 +1,7 @@
-(require
+(require mzlib/class mred mzlib/etc mzlib/list
- mzlib/class
+         "../aligned-pasteboard.rkt"
- mred
+         "../aligned-editor-container.rkt"
- mzlib/etc
+         "snip-dumper.rkt")
- mzlib/list
- "../aligned-pasteboard.ss"
- "../aligned-editor-container.ss"
- "snip-dumper.ss")
 
 ;                                                          
 ;                                                          
@@ -22,7 +18,7 @@
 ;                              ;;;                         
 ;                                                          
 
-(printf "running test2.ss\n")
+(printf "running test2.rktl\n")
 
 (define frame
   (instantiate frame% ()

collects/mrlib/scribblings/aligned-pasteboard/aligned-editor-canvas-class.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @defclass/title[aligned-editor-canvas% editor-canvas% ()]{
 
@@ -7,4 +7,3 @@ Calls the
 @method[aligned-pasteboard<%> realign] method when resized.
 
 }
-

collects/mrlib/scribblings/aligned-pasteboard/aligned-editor-snip-class.scrbl

@@ -1,9 +1,8 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @defclass/title[aligned-editor-snip% editor-snip% ()]{
 
 Calls the @method[aligned-pasteboard<%> realign] method when resized.
 
 }
-

collects/mrlib/scribblings/aligned-pasteboard/aligned-pasteboard-intf.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @definterface/title[aligned-pasteboard<%> ()]{
 

collects/mrlib/scribblings/aligned-pasteboard/aligned-pasteboard-parent-intf.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @definterface/title[aligned-pasteboard-parent<%> ()]{
 
@@ -10,4 +10,3 @@ is an @scheme[aligned-pasteboard<%>].
            void?]{}
 
 }
-

collects/mrlib/scribblings/aligned-pasteboard/aligned-pasteboard.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "../common.ss")
+@(require "../common.rkt")
 
 @title[#:style 'toc]{Aligned Pasteboard}
 

collects/mrlib/scribblings/aligned-pasteboard/horizontal-pasteboard-class.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @defclass/title[horizontal-pasteboard% pasteboard% (aligned-pasteboard<%>)]{
 
@@ -28,4 +28,3 @@ Passes all arguments to @scheme[super-init].
            (resized [snip (is-a?/c snip%)]
                     [redraw-now? any/c])
            void?]{}}
-

collects/mrlib/scribblings/aligned-pasteboard/stretchable-snip-intf.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @definterface/title[stretchable-snip<%> ()]{
 

collects/mrlib/scribblings/aligned-pasteboard/vertical-pasteboard-class.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @defclass/title[vertical-pasteboard% pasteboard% (aligned-pasteboard<%>)]{
 

collects/mrlib/scribblings/bitmap-label.scrbl

@@ -1,6 +1,5 @@
 #lang scribble/doc
-@(require "common.ss"
+@(require "common.rkt" (for-label mrlib/bitmap-label))
-          (for-label mrlib/bitmap-label))
 
 @title{Bitmap Label}
 

collects/mrlib/scribblings/cache-image-snip.scrbl

@@ -1,14 +1,13 @@
 #lang scribble/doc
-@(require "common.ss"
+@(require "common.rkt" (for-label mrlib/cache-image-snip))
-          (for-label mrlib/cache-image-snip))
 
 @title{Cache-image Snip}
 
 @defmodule[mrlib/cache-image-snip]{
 
 The @schememodname[mrlib/cache-image-snip] library provides the core
-data structure for DrRacket's @filepath{image.ss} teachpack. Images in
+data structure for DrRacket's @filepath{image.rkt} teachpack. Images in
-the @filepath{image.ss} teachpack are instances of the
+the @filepath{image.rkt} teachpack are instances of the
 @scheme[cache-image-snip%] class.}
 
 The library also defines a new type, @scheme[argb], that represents a

collects/mrlib/scribblings/close-icon.scrbl

@@ -1,9 +1,7 @@
 #lang scribble/doc
-@(require "common.ss"
+@(require "common.rkt"
           (for-label mrlib/close-icon
-                     scheme/gui
+                     scheme/gui scheme/runtime-path scheme/include))
-                     scheme/runtime-path
-                     scheme/include))
 
 @title{Close Icon}
 

collects/mrlib/scribblings/gif.scrbl

@@ -1,7 +1,5 @@
 #lang scribble/doc
-@(require "common.ss"
+@(require "common.rkt" (for-label mrlib/gif file/gif))
-          (for-label mrlib/gif
-                     file/gif))
 
 @title{GIF and Animated GIF Writing}
 

collects/mrlib/scribblings/graph/graph-pasteboard-intf.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @definterface/title[graph-pasteboard<%> ()]{
 
@@ -121,4 +121,3 @@ of an arrowhead for a line that connects (@scheme[from-x],@scheme[from-y]) to (@
 }
 
 }
-

collects/mrlib/scribblings/graph/graph-pasteboard-mixin.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @defmixin/title[graph-pasteboard-mixin (pasteboard%) (graph-pasteboard<%>)]{
 

collects/mrlib/scribblings/graph/graph-snip-intf.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @definterface/title[graph-snip<%> ()]{
 

collects/mrlib/scribblings/graph/graph-snip-mixin.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss")
+@(require "common.rkt")
 
 @defmixin/title[graph-snip-mixin (snip%) (graph-snip<%>)]{
 }

collects/mrlib/scribblings/graph/graph.scrbl

@@ -1,6 +1,5 @@
 #lang scribble/doc
-@(require "common.ss"
+@(require "common.rkt" (for-label mrlib/graph))
-          (for-label mrlib/graph))
 
 @title[#:style 'toc]{Graphs}
 

collects/mrlib/scribblings/hierlist/compound-item.scrbl

@@ -1,6 +1,5 @@
 #lang scribble/doc
-@(require "../common.ss"
+@(require "../common.rkt" (for-label mrlib/hierlist))
-          (for-label mrlib/hierlist))
 
 @definterface/title[hierarchical-list-compound-item<%>
                     (hierarchical-list-item<%>)]{

collects/mrlib/scribblings/hierlist/hierlist.scrbl

@@ -1,6 +1,5 @@
 #lang scribble/doc
-@(require "../common.ss"
+@(require "../common.rkt" (for-label mrlib/hierlist))
-          (for-label mrlib/hierlist))
 
 @title[#:style 'toc]{Hierarchical List Control}
 

collects/mrlib/scribblings/hierlist/item.scrbl

@@ -1,6 +1,5 @@
 #lang scribble/doc
-@(require "../common.ss"
+@(require "../common.rkt" (for-label mrlib/hierlist))
-          (for-label mrlib/hierlist))
 
 @definterface/title[hierarchical-list-item<%> ()]{
 

collects/mrlib/scribblings/hierlist/list.scrbl

@@ -1,6 +1,5 @@
 #lang scribble/doc
-@(require "../common.ss"
+@(require "../common.rkt" (for-label mrlib/hierlist))
-          (for-label mrlib/hierlist))
 
 @defclass/title[hierarchical-list% editor-canvas% ()]{
 

collects/mrlib/scribblings/hierlist/snips.scrbl

@@ -1,6 +1,5 @@
 #lang scribble/doc
-@(require "../common.ss"
+@(require "../common.rkt" (for-label mrlib/hierlist))
-          (for-label mrlib/hierlist))
 
 @title{Snips in a @scheme[hierarchical-list%] Instance}
 

collects/mrlib/scribblings/image-core.scrbl

@@ -1,6 +1,5 @@
 #lang scribble/doc
-@(require "common.ss"
+@(require "common.rkt" (for-label mrlib/image-core))
-          (for-label mrlib/image-core))
 
 @title{Image Core}
 

collects/mrlib/scribblings/include-bitmap.scrbl

@@ -1,8 +1,6 @@
 #lang scribble/doc
-@(require "common.ss"
+@(require "common.rkt"
-          (for-label mrlib/include-bitmap
+          (for-label mrlib/include-bitmap scheme/runtime-path scheme/include))
-                     scheme/runtime-path
-                     scheme/include))
 
 @title{Include Bitmap}
 

collects/mrlib/scribblings/interactive-value-port.scrbl

@@ -1,7 +1,5 @@
 #lang scribble/doc
-@(require "common.ss"
+@(require "common.rkt" (for-label mrlib/interactive-value-port scheme/pretty))
-          (for-label mrlib/interactive-value-port
-                     scheme/pretty))
 
 @title{Interactive Value Port}
 

collects/mrlib/scribblings/matrix-snip.scrbl

@@ -1,5 +1,5 @@
 #lang scribble/doc
-@(require "common.ss"
+@(require "common.rkt"
           (for-label mrlib/matrix-snip
                      (only-in mrlib/cache-image-snip
                               cache-image-snip%)))