Various typo, spelling, and punctuation fixes in scribblings.

Signed-off-by: David Van Horn <dvanhorn@ccs.neu.edu>

original commit: 22e2f3061f5f120ad51678c96024363aac95095e

collects/mrlib/image-core.rkt

@@ -1,8 +1,8 @@
-#lang scheme/base
+#lang racket/base
 #|
 
 This library is the part of the 2htdp/image 
-teachpack that has to be shared between drscheme
+teachpack that has to be shared between drracket
 and the user's program to make copy and paste
 work right.
 
@@ -26,11 +26,11 @@ has been moved out).
 
 |#
 
-(require scheme/class
-         scheme/gui/base
-         scheme/math
+(require racket/class
+         racket/gui/base
+         racket/math
          "private/image-core-bitmap.ss"
-         (for-syntax scheme/base))
+         (for-syntax racket/base))
 
 (define-for-syntax id-constructor-pairs '())
 (define-for-syntax (add-id-constructor-pair a b)
@@ -317,7 +317,7 @@ has been moved out).
   (and (= (round (bb-right bb1)) (round (bb-right bb2)))
        (= (round (bb-bottom bb1)) (round (bb-bottom bb2)))
        (= (round (bb-baseline bb1)) (round (bb-baseline bb2)))))
-(define scheme/base:read read)
+(define racket/base:read read)
 
 (define image-snipclass% 
   (class snip-class%
@@ -331,7 +331,7 @@ has been moved out).
               (and str
                    (with-handlers ((exn:fail:read? (λ (x) #f)))
                      (parse 
-                      (scheme/base:read
+                      (racket/base:read
                        (open-input-string
                         str)))))])
         (if lst

collects/mrlib/scribblings/image-core.scrbl

@@ -0,0 +1,24 @@
+#lang scribble/doc
+@(require "common.ss")
+
+@title{Image Core}
+
+@defmodule[mrlib/image-core]
+
+This library is the core part of the @racketmodname[2htdp/image] library that DrRacket
+links into the namespace of all languages that it runs. This ensures that minimal
+support for these images are the same in all languages, specifically including
+support for printing the images and constructing the core data structures making
+up an image.
+
+@defproc[(render-image [image image?]
+                       [dc (is-a?/c dc<%>)]
+                       [dx number?]
+                       [dy number?])
+         void?]{
+  Draws @racket[image] in @racket[dc] at the position (@racket[dx],@racket[dy]).
+}
+               
+@defproc[(image? [v any/c]) boolean?]{
+ Recognizes the images that library handles.
+}

collects/mrlib/scribblings/mrlib.scrbl

@@ -18,6 +18,7 @@
 @include-section["path-dialog.scrbl"]
 @include-section["plot.scrbl"]
 @include-section["switchable-button.scrbl"]
+@include-section["image-core.scrbl"]
 @include-section["tex-table.scrbl"]
 
 @section{Acknowledgments}

collects/scribblings/gui/canvas-class.scrbl

@@ -184,7 +184,7 @@ See also
 @method[canvas% init-manual-scrollbars] for information about manual scrollbars. The horizontal and vertical
  scrollbars are always either both manual or both automatic, but they
  are independently enabled. Automatic scrollbars can be
- re-initialized as manual, and vice-versa.
+ re-initialized as manual, and vice versa.
 
 If either @scheme[horiz-pixels] or @scheme[vert-pixels] is
  @scheme[#f], the scrollbar is not enabled in the corresponding
@@ -224,7 +224,7 @@ See also
 @method[canvas% init-auto-scrollbars] for information about automatic scrollbars. The horizontal and vertical
  scrollbars are always either both manual or both automatic, but they
  are independently enabled. Automatic scrollbars can be re-initialized
- as manual, and vice-versa.
+ as manual, and vice versa.
 
 The @scheme[h-length] and @scheme[v-length] arguments specify the length of
  each scrollbar in scroll steps (i.e., the maximum value of each

collects/scribblings/gui/style-delta-class.scrbl

@@ -404,8 +404,8 @@ the possible values are:
 @itemize[
 @item{@scheme['change-nothing] --- reset all changes}
 @item{@scheme['change-normal] --- turn off all styles and resizings}
-@item{@scheme['change-toggle-underline] --- underline regions that are currently not underlined, and vice-versa}
-@item{@scheme['change-toggle-size-in-pixels] --- interpret sizes in pixels for regions that are currently interpreted in points, and vice-versa}
+@item{@scheme['change-toggle-underline] --- underline regions that are currently not underlined, and vice versa}
+@item{@scheme['change-toggle-size-in-pixels] --- interpret sizes in pixels for regions that are currently interpreted in points, and vice versa}
 @item{@scheme['change-normal-color] --- change the foreground and background to black and white, respectively}
 @item{@scheme['change-italic] --- change the style of the font to @italic{italic}}
 @item{@scheme['change-bold] --- change the weight of the font to @bold{bold}}

doc/release-notes/gracket/HISTORY.txt

@@ -1,3 +1,9 @@
+Version 5.0, May 2010
+
+Changed the executable from MrEd to GRacket
+
+----------------------------------------------------------------------
+
 Version 4.2.5, March 2010
 
 Changed radio-box% to allow #f as a selection so that no buttons are