3337 - first use of type abbreviations: text

In the process I've uncover a couple of situations we don't support type
abbreviations yet. They're next.

12 files changed, 352 insertions, 352 deletions

diff --git a/sandbox/001-editor.mu b/sandbox/001-editor.mu
index be210b95..f59c43e1 100644
--- a/sandbox/001-editor.mu
+++ b/sandbox/001-editor.mu
@@ -16,8 +16,8 @@ def! main text:address:array:character [
 scenario editor-initially-prints-text-to-screen [
   assume-screen 10/width, 5/height
   run [
-    1:address:array:character <- new [abc]
-    new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+    1:text <- new [abc]
+    new-editor 1:text, screen:address:screen, 0/left, 10/right
   ]
   screen-should-contain [
     # top line of screen reserved for menu
@@ -257,9 +257,9 @@ def clear-rest-of-screen screen:address:screen, row:number, left:number, right:n
 scenario editor-initially-prints-multiple-lines [
   assume-screen 5/width, 5/height
   run [
-    s:address:array:character <- new [abc
+    s:text <- new [abc
 def]
-    new-editor s:address:array:character, screen:address:screen, 0/left, 5/right
+    new-editor s:text, screen:address:screen, 0/left, 5/right
   ]
   screen-should-contain [
     .     .
@@ -272,8 +272,8 @@ def]
 scenario editor-initially-handles-offsets [
   assume-screen 5/width, 5/height
   run [
-    s:address:array:character <- new [abc]
-    new-editor s:address:array:character, screen:address:screen, 1/left, 5/right
+    s:text <- new [abc]
+    new-editor s:text, screen:address:screen, 1/left, 5/right
   ]
   screen-should-contain [
     .     .
@@ -285,9 +285,9 @@ scenario editor-initially-handles-offsets [
 scenario editor-initially-prints-multiple-lines-at-offset [
   assume-screen 5/width, 5/height
   run [
-    s:address:array:character <- new [abc
+    s:text <- new [abc
 def]
-    new-editor s:address:array:character, screen:address:screen, 1/left, 5/right
+    new-editor s:text, screen:address:screen, 1/left, 5/right
   ]
   screen-should-contain [
     .     .
@@ -300,8 +300,8 @@ def]
 scenario editor-initially-wraps-long-lines [
   assume-screen 5/width, 5/height
   run [
-    s:address:array:character <- new [abc def]
-    new-editor s:address:array:character, screen:address:screen, 0/left, 5/right
+    s:text <- new [abc def]
+    new-editor s:text, screen:address:screen, 0/left, 5/right
   ]
   screen-should-contain [
     .     .
@@ -320,8 +320,8 @@ scenario editor-initially-wraps-long-lines [
 scenario editor-initially-wraps-barely-long-lines [
   assume-screen 5/width, 5/height
   run [
-    s:address:array:character <- new [abcde]
-    new-editor s:address:array:character, screen:address:screen, 0/left, 5/right
+    s:text <- new [abcde]
+    new-editor s:text, screen:address:screen, 0/left, 5/right
   ]
   # still wrap, even though the line would fit. We need room to click on the
   # end of the line
@@ -342,8 +342,8 @@ scenario editor-initially-wraps-barely-long-lines [
 scenario editor-initializes-empty-text [
   assume-screen 5/width, 5/height
   run [
-    1:address:array:character <- new []
-    2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 5/right
+    1:text <- new []
+    2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 5/right
     3:number <- get *2:address:editor-data, cursor-row:offset
     4:number <- get *2:address:editor-data, cursor-column:offset
   ]
@@ -363,10 +363,10 @@ scenario editor-initializes-empty-text [
 scenario render-colors-comments [
   assume-screen 5/width, 5/height
   run [
-    s:address:array:character <- new [abc
+    s:text <- new [abc
 # de
 f]
-    new-editor s:address:array:character, screen:address:screen, 0/left, 5/right
+    new-editor s:text, screen:address:screen, 0/left, 5/right
   ]
   screen-should-contain [
     .     .
@@ -444,10 +444,10 @@ def get-color color:number, c:character -> color:number [
 scenario render-colors-assignment [
   assume-screen 8/width, 5/height
   run [
-    s:address:array:character <- new [abc
+    s:text <- new [abc
 d <- e
 f]
-    new-editor s:address:array:character, screen:address:screen, 0/left, 8/right
+    new-editor s:text, screen:address:screen, 0/left, 8/right
   ]
   screen-should-contain [
     .        .
diff --git a/sandbox/002-typing.mu b/sandbox/002-typing.mu
index 1c4bae8a..b8ca7462 100644
--- a/sandbox/002-typing.mu
+++ b/sandbox/002-typing.mu
@@ -282,8 +282,8 @@ def editor-render screen:address:screen, editor:address:editor-data -> screen:ad
 
 scenario editor-handles-empty-event-queue [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abc]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  1:text <- new [abc]
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   assume-console []
   run [
@@ -299,8 +299,8 @@ scenario editor-handles-empty-event-queue [
 
 scenario editor-handles-mouse-clicks [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abc]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  1:text <- new [abc]
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   $clear-trace
   assume-console [
@@ -326,8 +326,8 @@ scenario editor-handles-mouse-clicks [
 
 scenario editor-handles-mouse-clicks-outside-text [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abc]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  1:text <- new [abc]
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   $clear-trace
   assume-console [
     left-click 1, 7  # last line, to the right of text
@@ -346,9 +346,9 @@ scenario editor-handles-mouse-clicks-outside-text [
 
 scenario editor-handles-mouse-clicks-outside-text-2 [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abc
+  1:text <- new [abc
 def]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   $clear-trace
   assume-console [
     left-click 1, 7  # interior line, to the right of text
@@ -367,9 +367,9 @@ def]
 
 scenario editor-handles-mouse-clicks-outside-text-3 [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abc
+  1:text <- new [abc
 def]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   $clear-trace
   assume-console [
     left-click 3, 7  # below text
@@ -388,9 +388,9 @@ def]
 
 scenario editor-handles-mouse-clicks-outside-column [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abc]
+  1:text <- new [abc]
   # editor occupies only left half of screen
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 5/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 5/right
   editor-render screen, 2:address:editor-data
   $clear-trace
   assume-console [
@@ -417,8 +417,8 @@ scenario editor-handles-mouse-clicks-outside-column [
 
 scenario editor-handles-mouse-clicks-in-menu-area [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abc]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 5/right
+  1:text <- new [abc]
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 5/right
   editor-render screen, 2:address:editor-data
   $clear-trace
   assume-console [
@@ -439,8 +439,8 @@ scenario editor-handles-mouse-clicks-in-menu-area [
 
 scenario editor-inserts-characters-into-empty-editor [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new []
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 5/right
+  1:text <- new []
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 5/right
   editor-render screen, 2:address:editor-data
   $clear-trace
   assume-console [
@@ -460,8 +460,8 @@ scenario editor-inserts-characters-into-empty-editor [
 
 scenario editor-inserts-characters-at-cursor [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abc]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  1:text <- new [abc]
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   $clear-trace
   # type two letters at different places
@@ -484,8 +484,8 @@ scenario editor-inserts-characters-at-cursor [
 
 scenario editor-inserts-characters-at-cursor-2 [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abc]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  1:text <- new [abc]
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   $clear-trace
   assume-console [
@@ -506,9 +506,9 @@ scenario editor-inserts-characters-at-cursor-2 [
 
 scenario editor-inserts-characters-at-cursor-5 [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abc
+  1:text <- new [abc
 d]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   $clear-trace
   assume-console [
@@ -530,8 +530,8 @@ d]
 
 scenario editor-inserts-characters-at-cursor-3 [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abc]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  1:text <- new [abc]
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   $clear-trace
   assume-console [
@@ -552,9 +552,9 @@ scenario editor-inserts-characters-at-cursor-3 [
 
 scenario editor-inserts-characters-at-cursor-4 [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abc
+  1:text <- new [abc
 d]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   $clear-trace
   assume-console [
@@ -576,9 +576,9 @@ d]
 
 scenario editor-inserts-characters-at-cursor-6 [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abc
+  1:text <- new [abc
 d]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   $clear-trace
   assume-console [
@@ -600,8 +600,8 @@ d]
 
 scenario editor-moves-cursor-after-inserting-characters [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [ab]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 5/right
+  1:text <- new [ab]
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 5/right
   editor-render screen, 2:address:editor-data
   assume-console [
     type [01]
@@ -621,8 +621,8 @@ scenario editor-moves-cursor-after-inserting-characters [
 
 scenario editor-wraps-line-on-insert [
   assume-screen 5/width, 5/height
-  1:address:array:character <- new [abc]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 5/right
+  1:text <- new [abc]
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 5/right
   editor-render screen, 2:address:editor-data
   # type a letter
   assume-console [
@@ -659,9 +659,9 @@ scenario editor-wraps-line-on-insert [
 scenario editor-wraps-line-on-insert-2 [
   # create an editor with some text
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abcdefg
+  1:text <- new [abcdefg
 defg]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 5/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 5/right
   editor-render screen, 2:address:editor-data
   # type more text at the start
   assume-console [
@@ -740,8 +740,8 @@ after <insert-character-special-case> [
 
 scenario editor-wraps-cursor-after-inserting-characters-in-middle-of-line [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abcde]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 5/right
+  1:text <- new [abcde]
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 5/right
   assume-console [
     left-click 1, 3  # right before the wrap icon
     type [f]
@@ -768,7 +768,7 @@ scenario editor-wraps-cursor-after-inserting-characters-at-end-of-line [
   local-scope
   assume-screen 10/width, 5/height
   # create an editor containing two lines
-  contents:address:array:character <- new [abc
+  contents:text <- new [abc
 xyz]
   1:address:editor-data/raw <- new-editor contents, screen, 0/left, 5/right
   screen-should-contain [
@@ -795,8 +795,8 @@ xyz]
 
 scenario editor-wraps-cursor-to-left-margin [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abcde]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 2/left, 7/right
+  1:text <- new [abcde]
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 2/left, 7/right
   assume-console [
     left-click 1, 5  # line is full; no wrap icon yet
     type [01]
@@ -831,8 +831,8 @@ after <editor-initialization> [
 
 scenario editor-moves-cursor-down-after-inserting-newline [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abc]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  1:text <- new [abc]
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   assume-console [
     type [0
 1]
@@ -936,8 +936,8 @@ def line-indent curr:address:duplex-list:character, start:address:duplex-list:ch
 
 scenario editor-moves-cursor-down-after-inserting-newline-2 [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abc]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 1/left, 10/right
+  1:text <- new [abc]
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 1/left, 10/right
   assume-console [
     type [0
 1]
@@ -956,8 +956,8 @@ scenario editor-moves-cursor-down-after-inserting-newline-2 [
 
 scenario editor-clears-previous-line-completely-after-inserting-newline [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abcde]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 5/right
+  1:text <- new [abcde]
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 5/right
   assume-console [
     press enter
   ]
@@ -983,10 +983,10 @@ scenario editor-clears-previous-line-completely-after-inserting-newline [
 
 scenario editor-inserts-indent-after-newline [
   assume-screen 10/width, 10/height
-  1:address:array:character <- new [ab
+  1:text <- new [ab
   cd
 ef]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   # position cursor after 'cd' and hit 'newline'
   assume-console [
     left-click 2, 8
@@ -1007,10 +1007,10 @@ ef]
 
 scenario editor-skips-indent-around-paste [
   assume-screen 10/width, 10/height
-  1:address:array:character <- new [ab
+  1:text <- new [ab
   cd
 ef]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   # position cursor after 'cd' and hit 'newline' surrounded by paste markers
   assume-console [
     left-click 2, 8
diff --git a/sandbox/003-shortcuts.mu b/sandbox/003-shortcuts.mu
index 46ab636e..05d42128 100644
--- a/sandbox/003-shortcuts.mu
+++ b/sandbox/003-shortcuts.mu
@@ -7,9 +7,9 @@
 scenario editor-inserts-two-spaces-on-tab [
   assume-screen 10/width, 5/height
   # just one character in final line
-  1:address:array:character <- new [ab
+  1:text <- new [ab
 cd]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 5/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 5/right
   assume-console [
     press tab
   ]
@@ -40,8 +40,8 @@ after <handle-special-character> [
 
 scenario editor-handles-backspace-key [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abc]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  1:text <- new [abc]
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   $clear-trace
   assume-console [
@@ -212,9 +212,9 @@ def previous-line-length curr:address:duplex-list:character, start:address:duple
 scenario editor-clears-last-line-on-backspace [
   assume-screen 10/width, 5/height
   # just one character in final line
-  1:address:array:character <- new [ab
+  1:text <- new [ab
 cd]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   assume-console [
     left-click 2, 0  # cursor at only character in final line
     press backspace
@@ -239,9 +239,9 @@ cd]
 scenario editor-joins-and-wraps-lines-on-backspace [
   assume-screen 10/width, 5/height
   # initialize editor with two long-ish but non-wrapping lines
-  1:address:array:character <- new [abc def
+  1:text <- new [abc def
 ghi jkl]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   $clear-trace
   # position the cursor at the start of the second and hit backspace
@@ -265,8 +265,8 @@ ghi jkl]
 scenario editor-wraps-long-lines-on-backspace [
   assume-screen 10/width, 5/height
   # initialize editor in part of the screen with a long line
-  1:address:array:character <- new [abc def ghij]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 8/right
+  1:text <- new [abc def ghij]
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 8/right
   editor-render screen, 2:address:editor-data
   # confirm that it wraps
   screen-should-contain [
@@ -298,8 +298,8 @@ scenario editor-wraps-long-lines-on-backspace [
 
 scenario editor-handles-delete-key [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abc]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  1:text <- new [abc]
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   $clear-trace
   assume-console [
@@ -387,8 +387,8 @@ def delete-at-cursor editor:address:editor-data, screen:address:screen -> editor
 
 scenario editor-moves-cursor-right-with-key [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abc]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  1:text <- new [abc]
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   $clear-trace
   assume-console [
@@ -482,9 +482,9 @@ def move-cursor-coordinates-right editor:address:editor-data, screen-height:numb
 
 scenario editor-moves-cursor-to-next-line-with-right-arrow [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abc
+  1:text <- new [abc
 d]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   $clear-trace
   # type right-arrow a few times to get to start of second line
@@ -517,9 +517,9 @@ d]
 
 scenario editor-moves-cursor-to-next-line-with-right-arrow-2 [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abc
+  1:text <- new [abc
 d]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 1/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 1/left, 10/right
   editor-render screen, 2:address:editor-data
   assume-console [
     press right-arrow
@@ -542,8 +542,8 @@ d]
 
 scenario editor-moves-cursor-to-next-wrapped-line-with-right-arrow [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abcdef]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 5/right
+  1:text <- new [abcdef]
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 5/right
   editor-render screen, 2:address:editor-data
   $clear-trace
   assume-console [
@@ -572,8 +572,8 @@ scenario editor-moves-cursor-to-next-wrapped-line-with-right-arrow [
 scenario editor-moves-cursor-to-next-wrapped-line-with-right-arrow-2 [
   assume-screen 10/width, 5/height
   # line just barely wrapping
-  1:address:array:character <- new [abcde]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 5/right
+  1:text <- new [abcde]
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 5/right
   editor-render screen, 2:address:editor-data
   $clear-trace
   # position cursor at last character before wrap and hit right-arrow
@@ -608,8 +608,8 @@ scenario editor-moves-cursor-to-next-wrapped-line-with-right-arrow-2 [
 
 scenario editor-moves-cursor-to-next-wrapped-line-with-right-arrow-3 [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abcdef]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 1/left, 6/right
+  1:text <- new [abcdef]
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 1/left, 6/right
   editor-render screen, 2:address:editor-data
   $clear-trace
   assume-console [
@@ -637,9 +637,9 @@ scenario editor-moves-cursor-to-next-wrapped-line-with-right-arrow-3 [
 
 scenario editor-moves-cursor-to-next-line-with-right-arrow-at-end-of-line [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abc
+  1:text <- new [abc
 d]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   $clear-trace
   # move to end of line, press right-arrow, type a character
@@ -668,8 +668,8 @@ d]
 
 scenario editor-moves-cursor-left-with-key [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abc]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  1:text <- new [abc]
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   $clear-trace
   assume-console [
@@ -711,9 +711,9 @@ after <handle-special-key> [
 scenario editor-moves-cursor-to-previous-line-with-left-arrow-at-start-of-line [
   assume-screen 10/width, 5/height
   # initialize editor with two lines
-  1:address:array:character <- new [abc
+  1:text <- new [abc
 d]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   $clear-trace
   # position cursor at start of second line (so there's no previous newline)
@@ -736,10 +736,10 @@ d]
 scenario editor-moves-cursor-to-previous-line-with-left-arrow-at-start-of-line-2 [
   assume-screen 10/width, 5/height
   # initialize editor with three lines
-  1:address:array:character <- new [abc
+  1:text <- new [abc
 def
 g]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   $clear-trace
   # position cursor further down (so there's a newline before the character at
@@ -764,10 +764,10 @@ g]
 
 scenario editor-moves-cursor-to-previous-line-with-left-arrow-at-start-of-line-3 [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abc
+  1:text <- new [abc
 def
 g]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   $clear-trace
   # position cursor at start of text, press left-arrow, then type a character
@@ -793,10 +793,10 @@ g]
 scenario editor-moves-cursor-to-previous-line-with-left-arrow-at-start-of-line-4 [
   assume-screen 10/width, 5/height
   # initialize editor with text containing an empty line
-  1:address:array:character <- new [abc
+  1:text <- new [abc
 
 d]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   $clear-trace
   # position cursor right after empty line
@@ -821,8 +821,8 @@ d]
 scenario editor-moves-across-screen-lines-across-wrap-with-left-arrow [
   assume-screen 10/width, 5/height
   # initialize editor with a wrapping line
-  1:address:array:character <- new [abcdef]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 5/right
+  1:text <- new [abcdef]
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 5/right
   editor-render screen, 2:address:editor-data
   $clear-trace
   screen-should-contain [
@@ -852,9 +852,9 @@ scenario editor-moves-across-screen-lines-across-wrap-with-left-arrow [
 scenario editor-moves-across-screen-lines-to-wrapping-line-with-left-arrow [
   assume-screen 10/width, 5/height
   # initialize editor with a wrapping line followed by a second line
-  1:address:array:character <- new [abcdef
+  1:text <- new [abcdef
 g]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 5/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 5/right
   editor-render screen, 2:address:editor-data
   $clear-trace
   screen-should-contain [
@@ -884,9 +884,9 @@ g]
 scenario editor-moves-across-screen-lines-to-non-wrapping-line-with-left-arrow [
   assume-screen 10/width, 5/height
   # initialize editor with a line on the verge of wrapping, followed by a second line
-  1:address:array:character <- new [abcd
+  1:text <- new [abcd
 e]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 5/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 5/right
   editor-render screen, 2:address:editor-data
   $clear-trace
   screen-should-contain [
@@ -919,9 +919,9 @@ e]
 
 scenario editor-moves-to-previous-line-with-up-arrow [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abc
+  1:text <- new [abc
 def]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   $clear-trace
   assume-console [
@@ -1034,9 +1034,9 @@ def move-to-previous-line editor:address:editor-data -> editor:address:editor-da
 
 scenario editor-adjusts-column-at-previous-line [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [ab
+  1:text <- new [ab
 def]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   $clear-trace
   assume-console [
@@ -1070,9 +1070,9 @@ def]
 
 scenario editor-adjusts-column-at-empty-line [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [
+  1:text <- new [
 def]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   $clear-trace
   assume-console [
@@ -1107,10 +1107,10 @@ def]
 scenario editor-moves-to-previous-line-from-left-margin [
   assume-screen 10/width, 5/height
   # start out with three lines
-  1:address:array:character <- new [abc
+  1:text <- new [abc
 def
 ghi]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   $clear-trace
   # click on the third line and hit up-arrow, so you end up just after a newline
@@ -1147,9 +1147,9 @@ ghi]
 
 scenario editor-moves-to-next-line-with-down-arrow [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abc
+  1:text <- new [abc
 def]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   $clear-trace
   # cursor starts out at (1, 0)
@@ -1238,9 +1238,9 @@ def move-to-next-line editor:address:editor-data, screen-height:number -> editor
 
 scenario editor-adjusts-column-at-next-line [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abc
+  1:text <- new [abc
 de]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   $clear-trace
   assume-console [
@@ -1276,9 +1276,9 @@ de]
 
 scenario editor-moves-to-start-of-line-with-ctrl-a [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [123
+  1:text <- new [123
 456]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   $clear-trace
   # start on second line, press ctrl-a
@@ -1351,9 +1351,9 @@ def move-to-start-of-line editor:address:editor-data -> editor:address:editor-da
 
 scenario editor-moves-to-start-of-line-with-ctrl-a-2 [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [123
+  1:text <- new [123
 456]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   $clear-trace
   # start on first line (no newline before), press ctrl-a
@@ -1376,9 +1376,9 @@ scenario editor-moves-to-start-of-line-with-ctrl-a-2 [
 
 scenario editor-moves-to-start-of-line-with-home [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [123
+  1:text <- new [123
 456]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   $clear-trace
   # start on second line, press 'home'
   assume-console [
@@ -1400,9 +1400,9 @@ scenario editor-moves-to-start-of-line-with-home [
 
 scenario editor-moves-to-start-of-line-with-home-2 [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [123
+  1:text <- new [123
 456]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   $clear-trace
   # start on first line (no newline before), press 'home'
@@ -1427,9 +1427,9 @@ scenario editor-moves-to-start-of-line-with-home-2 [
 
 scenario editor-moves-to-end-of-line-with-ctrl-e [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [123
+  1:text <- new [123
 456]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   $clear-trace
   # start on first line, press ctrl-e
@@ -1519,9 +1519,9 @@ def move-to-end-of-line editor:address:editor-data -> editor:address:editor-data
 
 scenario editor-moves-to-end-of-line-with-ctrl-e-2 [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [123
+  1:text <- new [123
 456]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   $clear-trace
   # start on second line (no newline after), press ctrl-e
@@ -1544,9 +1544,9 @@ scenario editor-moves-to-end-of-line-with-ctrl-e-2 [
 
 scenario editor-moves-to-end-of-line-with-end [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [123
+  1:text <- new [123
 456]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   $clear-trace
   # start on first line, press 'end'
@@ -1569,9 +1569,9 @@ scenario editor-moves-to-end-of-line-with-end [
 
 scenario editor-moves-to-end-of-line-with-end-2 [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [123
+  1:text <- new [123
 456]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   $clear-trace
   # start on second line (no newline after), press 'end'
@@ -1596,9 +1596,9 @@ scenario editor-moves-to-end-of-line-with-end-2 [
 
 scenario editor-deletes-to-start-of-line-with-ctrl-u [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [123
+  1:text <- new [123
 456]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   # start on second line, press ctrl-u
   assume-console [
     left-click 2, 2
@@ -1659,9 +1659,9 @@ def delete-to-start-of-line editor:address:editor-data -> result:address:duplex-
 
 scenario editor-deletes-to-start-of-line-with-ctrl-u-2 [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [123
+  1:text <- new [123
 456]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   # start on first line (no newline before), press ctrl-u
   assume-console [
     left-click 1, 2
@@ -1682,9 +1682,9 @@ scenario editor-deletes-to-start-of-line-with-ctrl-u-2 [
 
 scenario editor-deletes-to-start-of-line-with-ctrl-u-3 [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [123
+  1:text <- new [123
 456]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   # start past end of line, press ctrl-u
   assume-console [
     left-click 1, 3
@@ -1705,9 +1705,9 @@ scenario editor-deletes-to-start-of-line-with-ctrl-u-3 [
 
 scenario editor-deletes-to-start-of-final-line-with-ctrl-u [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [123
+  1:text <- new [123
 456]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   # start past end of final line, press ctrl-u
   assume-console [
     left-click 2, 3
@@ -1730,9 +1730,9 @@ scenario editor-deletes-to-start-of-final-line-with-ctrl-u [
 
 scenario editor-deletes-to-end-of-line-with-ctrl-k [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [123
+  1:text <- new [123
 456]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   # start on first line, press ctrl-k
   assume-console [
     left-click 1, 1
@@ -1785,9 +1785,9 @@ def delete-to-end-of-line editor:address:editor-data -> result:address:duplex-li
 
 scenario editor-deletes-to-end-of-line-with-ctrl-k-2 [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [123
+  1:text <- new [123
 456]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   # start on second line (no newline after), press ctrl-k
   assume-console [
     left-click 2, 1
@@ -1808,9 +1808,9 @@ scenario editor-deletes-to-end-of-line-with-ctrl-k-2 [
 
 scenario editor-deletes-to-end-of-line-with-ctrl-k-3 [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [123
+  1:text <- new [123
 456]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   # start at end of line
   assume-console [
     left-click 1, 2
@@ -1831,9 +1831,9 @@ scenario editor-deletes-to-end-of-line-with-ctrl-k-3 [
 
 scenario editor-deletes-to-end-of-line-with-ctrl-k-4 [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [123
+  1:text <- new [123
 456]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   # start past end of line
   assume-console [
     left-click 1, 3
@@ -1854,9 +1854,9 @@ scenario editor-deletes-to-end-of-line-with-ctrl-k-4 [
 
 scenario editor-deletes-to-end-of-line-with-ctrl-k-5 [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [123
+  1:text <- new [123
 456]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   # start at end of text
   assume-console [
     left-click 2, 2
@@ -1877,9 +1877,9 @@ scenario editor-deletes-to-end-of-line-with-ctrl-k-5 [
 
 scenario editor-deletes-to-end-of-line-with-ctrl-k-6 [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [123
+  1:text <- new [123
 456]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   # start past end of text
   assume-console [
     left-click 2, 3
diff --git a/sandbox/004-programming-environment.mu b/sandbox/004-programming-environment.mu
index b2f0ebc0..bcbc5197 100644
--- a/sandbox/004-programming-environment.mu
+++ b/sandbox/004-programming-environment.mu
@@ -3,7 +3,7 @@
 def! main [
   local-scope
   open-console
-  initial-sandbox:address:array:character <- new []
+  initial-sandbox:text <- new []
   hide-screen 0/screen
   env:address:programming-environment-data <- new-programming-environment 0/screen, initial-sandbox
   env <- restore-sandboxes env
diff --git a/sandbox/005-sandbox.mu b/sandbox/005-sandbox.mu
index 54013373..810aab5f 100644
--- a/sandbox/005-sandbox.mu
+++ b/sandbox/005-sandbox.mu
@@ -32,8 +32,8 @@ scenario run-and-show-results [
   trace-until 100/app  # trace too long
   assume-screen 50/width, 15/height
   # sandbox editor contains an instruction without storing outputs
-  1:address:array:character <- new [divide-with-remainder 11, 3]
-  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character
+  1:text <- new [divide-with-remainder 11, 3]
+  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text
   # run the code in the editors
   assume-console [
     press F4
@@ -108,7 +108,7 @@ after <global-keypress> [
     do-run?:boolean <- equal k, 65532/F4
     break-unless do-run?
     screen <- update-status screen, [running...       ], 245/grey
-    test-recipes:address:array:character, _/optional <- next-ingredient
+    test-recipes:text, _/optional <- next-ingredient
     error?:boolean, env, screen <- run-sandboxes env, screen, test-recipes
 #?     test-recipes <- copy 0  # abandon
     # F4 might update warnings and results on both sides
@@ -130,7 +130,7 @@ def run-sandboxes env:address:programming-environment-data, screen:address:scree
   <run-sandboxes-begin>
   current-sandbox:address:editor-data <- get *env, current-sandbox:offset
   {
-    sandbox-contents:address:array:character <- editor-contents current-sandbox
+    sandbox-contents:text <- editor-contents current-sandbox
     break-unless sandbox-contents
     # if contents exist, first save them
     # run them and turn them into a new sandbox-data
@@ -171,7 +171,7 @@ def update-recipes env:address:programming-environment-data, screen:address:scre
   load-ingredients
   {
     break-if test-recipes
-    in:address:array:character <- restore [recipes.mu]  # newlayer: persistence
+    in:text <- restore [recipes.mu]  # newlayer: persistence
     reload in
   }
   {
@@ -185,8 +185,8 @@ def update-recipes env:address:programming-environment-data, screen:address:scre
 def! update-sandbox sandbox:address:sandbox-data, env:address:programming-environment-data, idx:number -> sandbox:address:sandbox-data, env:address:programming-environment-data [
   local-scope
   load-ingredients
-  data:address:array:character <- get *sandbox, data:offset
-  response:address:array:character, _, fake-screen:address:screen <- run-sandboxed data
+  data:text <- get *sandbox, data:offset
+  response:text, _, fake-screen:address:screen <- run-sandboxed data
   *sandbox <- put *sandbox, response:offset, response
   *sandbox <- put *sandbox, screen:offset, fake-screen
 ]
@@ -208,8 +208,8 @@ def save-sandboxes env:address:programming-environment-data [
   idx:number <- copy 0
   {
     break-unless curr
-    data:address:array:character <- get *curr, data:offset
-    filename:address:array:character <- to-text idx
+    data:text <- get *curr, data:offset
+    filename:text <- to-text idx
     save filename, data
     <end-save-sandbox>
     idx <- add idx, 1
@@ -262,11 +262,11 @@ def render-sandboxes screen:address:screen, sandbox:address:sandbox-data, left:n
     # render sandbox contents
     row <- add row, 1
     screen <- move-cursor screen, row, left
-    sandbox-data:address:array:character <- get *sandbox, data:offset
+    sandbox-data:text <- get *sandbox, data:offset
     row, screen <- render-code screen, sandbox-data, left, right, row
     *sandbox <- put *sandbox, code-ending-row-on-screen:offset, row
     # render sandbox warnings, screen or response, in that order
-    sandbox-response:address:array:character <- get *sandbox, response:offset
+    sandbox-response:text <- get *sandbox, response:offset
     <render-sandbox-results>
     {
       sandbox-screen:address:screen <- get *sandbox, screen:offset
@@ -409,8 +409,8 @@ def! restore-sandboxes env:address:programming-environment-data -> env:address:p
   curr:address:sandbox-data <- copy 0
   prev:address:sandbox-data <- copy 0
   {
-    filename:address:array:character <- to-text idx
-    contents:address:array:character <- restore filename
+    filename:text <- to-text idx
+    contents:text <- restore filename
     break-unless contents  # stop at first error; assuming file didn't exist
                            # todo: handle empty sandbox
     # create new sandbox for file
@@ -504,20 +504,20 @@ scenario run-updates-results [
   trace-until 100/app  # trace too long
   assume-screen 50/width, 12/height
   # define a recipe (no indent for the 'add' line below so column numbers are more obvious)
-  1:address:array:character <- new [ 
+  1:text <- new [ 
 def foo [
 local-scope
 z:number <- add 2, 2
 return z
 ]]
   # sandbox editor contains an instruction without storing outputs
-  2:address:array:character <- new [foo]
-  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 2:address:array:character
+  2:text <- new [foo]
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 2:text
   # run the code in the editors
   assume-console [
     press F4
   ]
-  event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data, 1:address:array:character/recipes
+  event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data, 1:text/recipes
   screen-should-contain [
     .                               run (F4)           .
     .                                                  .
@@ -529,7 +529,7 @@ return z
     .                                                  .
   ]
   # make a change (incrementing one of the args to 'add'), then rerun
-  1:address:array:character <- new [ 
+  1:text <- new [ 
 def foo [
 local-scope
 z:number <- add 2, 3
@@ -539,7 +539,7 @@ return z
     press F4
   ]
   run [
-    event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data, 1:address:array:character/recipes
+    event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data, 1:text/recipes
   ]
   # check that screen updates the result on the right
   screen-should-contain [
@@ -558,8 +558,8 @@ scenario run-instruction-manages-screen-per-sandbox [
   trace-until 100/app  # trace too long
   assume-screen 50/width, 20/height
   # editor contains an instruction
-  1:address:array:character <- new [print-integer screen, 4]
-  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character
+  1:text <- new [print-integer screen, 4]
+  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text
   # run the code in the editor
   assume-console [
     press F4
@@ -606,16 +606,16 @@ def editor-contents editor:address:editor-data -> result:address:array:character
 
 scenario editor-provides-edited-contents [
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abc]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  1:text <- new [abc]
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   assume-console [
     left-click 1, 2
     type [def]
   ]
   run [
     editor-event-loop screen:address:screen, console:address:console, 2:address:editor-data
-    3:address:array:character <- editor-contents 2:address:editor-data
-    4:array:character <- copy *3:address:array:character
+    3:text <- editor-contents 2:address:editor-data
+    4:array:character <- copy *3:text
   ]
   memory-should-contain [
     4:array:character <- [abdefc]
@@ -628,8 +628,8 @@ scenario scrolling-down-past-bottom-of-sandbox-editor [
   trace-until 100/app  # trace too long
   assume-screen 50/width, 20/height
   # initialize
-  1:address:array:character <- new [add 2, 2]
-  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character
+  1:text <- new [add 2, 2]
+  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text
   render-all screen, 2:address:programming-environment-data, render
   assume-console [
     # create a sandbox
@@ -764,8 +764,8 @@ scenario scrolling-through-multiple-sandboxes [
   trace-until 100/app  # trace too long
   assume-screen 50/width, 20/height
   # initialize environment
-  1:address:array:character <- new []
-  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character
+  1:text <- new []
+  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text
   render-all screen, 2:address:programming-environment-data, render
   # create 2 sandboxes
   assume-console [
@@ -925,8 +925,8 @@ scenario scrolling-manages-sandbox-index-correctly [
   trace-until 100/app  # trace too long
   assume-screen 50/width, 20/height
   # initialize environment
-  1:address:array:character <- new []
-  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character
+  1:text <- new []
+  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text
   render-all screen, 2:address:programming-environment-data, render
   # create a sandbox
   assume-console [
diff --git a/sandbox/006-sandbox-copy.mu b/sandbox/006-sandbox-copy.mu
index d1d221d1..754a4a3d 100644
--- a/sandbox/006-sandbox-copy.mu
+++ b/sandbox/006-sandbox-copy.mu
@@ -4,11 +4,11 @@
 scenario copy-a-sandbox-to-editor [
   trace-until 50/app  # trace too long
   assume-screen 50/width, 10/height
-  1:address:array:character <- new [add 1, 1]
+  1:text <- new [add 1, 1]
   assume-console [
     press F4
   ]
-  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character
+  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text
   event-loop screen:address:screen, console:address:console, 2:address:programming-environment-data
   screen-should-contain [
     .                               run (F4)           .
@@ -66,11 +66,11 @@ scenario copy-a-sandbox-to-editor [
 scenario copy-a-sandbox-to-editor-2 [
   trace-until 50/app  # trace too long
   assume-screen 50/width, 10/height
-  1:address:array:character <- new [add 1, 1]
+  1:text <- new [add 1, 1]
   assume-console [
     press F4
   ]
-  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character
+  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text
   event-loop screen:address:screen, console:address:console, 2:address:programming-environment-data
   screen-should-contain [
     .                               run (F4)           .
@@ -167,7 +167,7 @@ def try-copy-sandbox click-row:number, env:address:programming-environment-data
   sandbox:address:sandbox-data <- find-sandbox env, click-row
   return-unless sandbox, 0/false
   clicked-on-copy-button? <- copy 1/true
-  text:address:array:character <- get *sandbox, data:offset
+  text:text <- get *sandbox, data:offset
   current-sandbox:address:editor-data <- get *env, current-sandbox:offset
   current-sandbox <- insert-text current-sandbox, text
   # reset scroll
@@ -217,11 +217,11 @@ def within-range? x:number, low:number, high:number -> result:boolean [
 scenario copy-fails-if-sandbox-editor-not-empty [
   trace-until 50/app  # trace too long
   assume-screen 50/width, 10/height
-  1:address:array:character <- new [add 1, 1]
+  1:text <- new [add 1, 1]
   assume-console [
     press F4
   ]
-  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character
+  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text
   event-loop screen:address:screen, console:address:console, 2:address:programming-environment-data
   screen-should-contain [
     .                               run (F4)           .
diff --git a/sandbox/007-sandbox-delete.mu b/sandbox/007-sandbox-delete.mu
index 00738646..74a50d3c 100644
--- a/sandbox/007-sandbox-delete.mu
+++ b/sandbox/007-sandbox-delete.mu
@@ -3,8 +3,8 @@
 scenario deleting-sandboxes [
   trace-until 100/app  # trace too long
   assume-screen 50/width, 15/height
-  1:address:array:character <- new []
-  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character
+  1:text <- new []
+  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text
   # run a few commands
   assume-console [
     type [divide-with-remainder 11, 3]
@@ -147,8 +147,8 @@ scenario deleting-sandbox-after-scroll [
   trace-until 100/app  # trace too long
   assume-screen 50/width, 10/height
   # initialize environment
-  1:address:array:character <- new []
-  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character
+  1:text <- new []
+  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text
   render-all screen, 2:address:programming-environment-data, render
   # create 2 sandboxes and scroll to second
   assume-console [
@@ -195,8 +195,8 @@ scenario deleting-top-sandbox-after-scroll [
   trace-until 100/app  # trace too long
   assume-screen 50/width, 10/height
   # initialize environment
-  1:address:array:character <- new []
-  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character
+  1:text <- new []
+  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text
   render-all screen, 2:address:programming-environment-data, render
   # create 2 sandboxes and scroll to second
   assume-console [
@@ -243,8 +243,8 @@ scenario deleting-final-sandbox-after-scroll [
   trace-until 100/app  # trace too long
   assume-screen 50/width, 10/height
   # initialize environment
-  1:address:array:character <- new []
-  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character
+  1:text <- new []
+  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text
   render-all screen, 2:address:programming-environment-data, render
   # create 2 sandboxes and scroll to second
   assume-console [
@@ -290,8 +290,8 @@ scenario deleting-updates-sandbox-count [
   trace-until 100/app  # trace too long
   assume-screen 50/width, 10/height
   # initialize environment
-  1:address:array:character <- new []
-  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character
+  1:text <- new []
+  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text
   render-all screen, 2:address:programming-environment-data, render
   # create 2 sandboxes
   assume-console [
diff --git a/sandbox/008-sandbox-edit.mu b/sandbox/008-sandbox-edit.mu
index 66aeadc7..c92ec445 100644
--- a/sandbox/008-sandbox-edit.mu
+++ b/sandbox/008-sandbox-edit.mu
@@ -4,11 +4,11 @@ scenario clicking-on-a-sandbox-moves-it-to-editor [
   trace-until 100/app  # trace too long
   assume-screen 50/width, 10/height
   # run something
-  1:address:array:character <- new [add 2, 2]
+  1:text <- new [add 2, 2]
   assume-console [
     press F4
   ]
-  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character
+  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text
   event-loop screen:address:screen, console:address:console, 2:address:programming-environment-data
   screen-should-contain [
     .                               run (F4)           .
@@ -92,7 +92,7 @@ def try-edit-sandbox click-row:number, env:address:programming-environment-data
   return-unless sandbox, 0/false
   clicked-on-edit-button? <- copy 1/true
   # 'edit' button = 'copy' button + 'delete' button
-  text:address:array:character <- get *sandbox, data:offset
+  text:text <- get *sandbox, data:offset
   current-sandbox:address:editor-data <- get *env, current-sandbox:offset
   current-sandbox <- insert-text current-sandbox, text
   env <- delete-sandbox env, sandbox
@@ -104,8 +104,8 @@ scenario sandbox-with-print-can-be-edited [
   trace-until 100/app  # trace too long
   assume-screen 50/width, 20/height
   # run a print instruction
-  1:address:array:character <- new [print-integer screen, 4]
-  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character
+  1:text <- new [print-integer screen, 4]
+  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text
   # run the sandbox
   assume-console [
     press F4
@@ -146,8 +146,8 @@ scenario editing-sandbox-after-scrolling-resets-scroll [
   trace-until 100/app  # trace too long
   assume-screen 50/width, 20/height
   # initialize environment
-  1:address:array:character <- new []
-  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character
+  1:text <- new []
+  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text
   render-all screen, 2:address:programming-environment-data, render
   # create 2 sandboxes and scroll to second
   assume-console [
@@ -193,8 +193,8 @@ scenario editing-sandbox-updates-sandbox-count [
   trace-until 100/app  # trace too long
   assume-screen 50/width, 20/height
   # initialize environment
-  1:address:array:character <- new []
-  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character
+  1:text <- new []
+  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text
   render-all screen, 2:address:programming-environment-data, render
   # create 2 sandboxes and scroll to second
   assume-console [
diff --git a/sandbox/009-sandbox-test.mu b/sandbox/009-sandbox-test.mu
index 6d0ca691..c89775a4 100644
--- a/sandbox/009-sandbox-test.mu
+++ b/sandbox/009-sandbox-test.mu
@@ -4,17 +4,17 @@ scenario sandbox-click-on-result-toggles-color-to-green [
   trace-until 100/app  # trace too long
   assume-screen 50/width, 20/height
   # basic recipe
-  1:address:array:character <- new [ 
+  1:text <- new [ 
 def foo [
   return 4
 ]]
   # run it
-  2:address:array:character <- new [foo]
+  2:text <- new [foo]
   assume-console [
     press F4
   ]
-  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 2:address:array:character
-  event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data, 1:address:array:character/test-recipes
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 2:text
+  event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data, 1:text/test-recipes
   screen-should-contain [
     .                               run (F4)           .
     .                                                  .
@@ -30,7 +30,7 @@ def foo [
     left-click 5, 21
   ]
   run [
-    event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data, 1:address:array:character/test-recipes
+    event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data, 1:text/test-recipes
   ]
   # color toggles to green
   screen-should-contain-in-color 2/green, [
@@ -58,7 +58,7 @@ def foo [
     .                                                  .
   ]
   # now change the result
-  1:address:array:character <- new [ 
+  1:text <- new [ 
 def foo [
   return 3
 ]]
@@ -67,7 +67,7 @@ def foo [
     press F4
   ]
   run [
-    event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data, 1:address:array:character/new-test-recipes
+    event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data, 1:text/new-test-recipes
   ]
   # result turns red
   screen-should-contain-in-color 1/red, [
@@ -90,7 +90,7 @@ container sandbox-data [
 # include expected response when saving or restoring a sandbox
 before <end-save-sandbox> [
   {
-    expected-response:address:array:character <- get *curr, expected-response:offset
+    expected-response:text <- get *curr, expected-response:offset
     break-unless expected-response
     filename <- append filename, [.out]
     save filename, expected-response
@@ -164,7 +164,7 @@ def find-click-in-sandbox-output env:address:programming-environment-data, click
 def toggle-expected-response sandbox:address:sandbox-data -> sandbox:address:sandbox-data [
   local-scope
   load-ingredients
-  expected-response:address:array:character <- get *sandbox, expected-response:offset
+  expected-response:text <- get *sandbox, expected-response:offset
   {
     # if expected-response is set, reset
     break-unless expected-response
@@ -173,7 +173,7 @@ def toggle-expected-response sandbox:address:sandbox-data -> sandbox:address:san
   {
     # if not, set expected response to the current response
     break-if expected-response
-    response:address:array:character <- get *sandbox, response:offset
+    response:text <- get *sandbox, response:offset
     *sandbox <- put *sandbox, expected-response:offset, response
   }
 ]
@@ -183,7 +183,7 @@ after <render-sandbox-response> [
   {
     break-unless sandbox-response
     *sandbox <- put *sandbox, response-starting-row-on-screen:offset, row
-    expected-response:address:array:character <- get *sandbox, expected-response:offset
+    expected-response:text <- get *sandbox, expected-response:offset
     break-unless expected-response  # fall-through to print in grey
     response-is-expected?:boolean <- equal expected-response, sandbox-response
     {
diff --git a/sandbox/010-sandbox-trace.mu b/sandbox/010-sandbox-trace.mu
index 7af6598b..c42a9dfc 100644
--- a/sandbox/010-sandbox-trace.mu
+++ b/sandbox/010-sandbox-trace.mu
@@ -4,11 +4,11 @@ scenario sandbox-click-on-code-toggles-app-trace [
   trace-until 100/app  # trace too long
   assume-screen 50/width, 10/height
   # run a stash instruction
-  1:address:array:character <- new [stash [abc]]
+  1:text <- new [stash [abc]]
   assume-console [
     press F4
   ]
-  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character
+  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text
   event-loop screen:address:screen, console:address:console, 2:address:programming-environment-data
   screen-should-contain [
     .                               run (F4)           .
@@ -75,12 +75,12 @@ scenario sandbox-shows-app-trace-and-result [
   trace-until 100/app  # trace too long
   assume-screen 50/width, 10/height
   # run a stash instruction and some code
-  1:address:array:character <- new [stash [abc]
+  1:text <- new [stash [abc]
 add 2, 2]
   assume-console [
     press F4
   ]
-  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character
+  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text
   event-loop screen:address:screen, console:address:console, 2:address:programming-environment-data
   screen-should-contain [
     .                               run (F4)           .
@@ -119,12 +119,12 @@ scenario clicking-on-app-trace-does-nothing [
   trace-until 100/app  # trace too long
   assume-screen 50/width, 10/height
   # create and expand the trace
-  1:address:array:character <- new [stash 123456789]
+  1:text <- new [stash 123456789]
   assume-console [
     press F4
     left-click 4, 1
   ]
-  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character
+  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text
   event-loop screen:address:screen, console:address:console, 2:address:programming-environment-data
   screen-should-contain [
     .                               run (F4)           .
@@ -167,8 +167,8 @@ container sandbox-data [
 def! update-sandbox sandbox:address:sandbox-data, env:address:programming-environment-data, idx:number -> sandbox:address:sandbox-data, env:address:programming-environment-data [
   local-scope
   load-ingredients
-  data:address:array:character <- get *sandbox, data:offset
-  response:address:array:character, _, fake-screen:address:screen, trace:address:array:character <- run-sandboxed data
+  data:text <- get *sandbox, data:offset
+  response:text, _, fake-screen:address:screen, trace:text <- run-sandboxed data
   *sandbox <- put *sandbox, response:offset, response
   *sandbox <- put *sandbox, screen:offset, fake-screen
   *sandbox <- put *sandbox, trace:offset, trace
@@ -240,7 +240,7 @@ after <render-sandbox-results> [
   {
     display-trace?:boolean <- get *sandbox, display-trace?:offset
     break-unless display-trace?
-    sandbox-trace:address:array:character <- get *sandbox, trace:offset
+    sandbox-trace:text <- get *sandbox, trace:offset
     break-unless sandbox-trace  # nothing to print; move on
     row, screen <- render-text screen, sandbox-trace, left, right, 245/grey, row
   }
diff --git a/sandbox/011-errors.mu b/sandbox/011-errors.mu
index e311cb52..108ec0ab 100644
--- a/sandbox/011-errors.mu
+++ b/sandbox/011-errors.mu
@@ -11,13 +11,13 @@ def! update-recipes env:address:programming-environment-data, screen:address:scr
   load-ingredients
   {
     break-if test-recipes
-    in:address:array:character <- restore [recipes.mu]
-    recipe-errors:address:array:character <- reload in
+    in:text <- restore [recipes.mu]
+    recipe-errors:text <- reload in
     *env <- put *env, recipe-errors:offset, recipe-errors
   }
   {
     break-unless test-recipes
-    recipe-errors:address:array:character <- reload test-recipes
+    recipe-errors:text <- reload test-recipes
   }
   *env <- put *env, recipe-errors:offset, recipe-errors
   # if recipe editor has errors, stop
@@ -32,7 +32,7 @@ def! update-recipes env:address:programming-environment-data, screen:address:scr
 
 before <render-components-end> [
   trace 11, [app], [render status]
-  recipe-errors:address:array:character <- get *env, recipe-errors:offset
+  recipe-errors:text <- get *env, recipe-errors:offset
   {
     break-unless recipe-errors
     update-status screen, [errors found     ], 1/red
@@ -66,8 +66,8 @@ before <render-components-end> [
     error-index:number <- get *env, error-index:offset
     sandboxes-completed-successfully?:boolean <- equal error-index, -1
     break-if sandboxes-completed-successfully?
-    error-index-text:address:array:character <- to-text error-index
-    status:address:array:character <- interpolate [errors found (_)    ], error-index-text
+    error-index-text:text <- to-text error-index
+    status:text <- interpolate [errors found (_)    ], error-index-text
     update-status screen, status, 1/red
   }
 ]
@@ -80,13 +80,13 @@ def! update-sandbox sandbox:address:sandbox-data, env:address:programming-enviro
   local-scope
   load-ingredients
   {
-    recipe-errors:address:array:character <- get *env, recipe-errors:offset
+    recipe-errors:text <- get *env, recipe-errors:offset
     break-unless recipe-errors
     *sandbox <- put *sandbox, errors:offset, recipe-errors
     return
   }
-  data:address:array:character <- get *sandbox, data:offset
-  response:address:array:character, errors:address:array:character, fake-screen:address:screen, trace:address:array:character, completed?:boolean <- run-sandboxed data
+  data:text <- get *sandbox, data:offset
+  response:text, errors:text, fake-screen:address:screen, trace:text, completed?:boolean <- run-sandboxed data
   *sandbox <- put *sandbox, response:offset, response
   *sandbox <- put *sandbox, errors:offset, errors
   *sandbox <- put *sandbox, screen:offset, fake-screen
@@ -110,12 +110,12 @@ def! update-sandbox sandbox:address:sandbox-data, env:address:programming-enviro
 # make sure we render any trace
 after <render-sandbox-trace-done> [
   {
-    sandbox-errors:address:array:character <- get *sandbox, errors:offset
+    sandbox-errors:text <- get *sandbox, errors:offset
     break-unless sandbox-errors
     *sandbox <- put *sandbox, response-starting-row-on-screen:offset, 0  # no response
     {
       break-unless env
-      recipe-errors:address:array:character <- get *env, recipe-errors:offset
+      recipe-errors:text <- get *env, recipe-errors:offset
       row, screen <- render-text screen, recipe-errors, left, right, 1/red, row
     }
     row, screen <- render-text screen, sandbox-errors, left, right, 1/red, row
@@ -127,17 +127,17 @@ after <render-sandbox-trace-done> [
 scenario run-shows-errors-in-get [
   trace-until 100/app  # trace too long
   assume-screen 50/width, 20/height
-  1:address:array:character <- new [ 
+  1:text <- new [ 
 def foo [
   get 123:number, foo:offset
 ]]
-  2:address:array:character <- new [foo]
-  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 2:address:array:character
+  2:text <- new [foo]
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 2:text
   assume-console [
     press F4
   ]
   run [
-    event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data, 1:address:array:character/test-recipes
+    event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data, 1:text/test-recipes
   ]
   screen-should-contain [
     .  errors found                 run (F4)           .
@@ -158,9 +158,9 @@ def foo [
 scenario run-updates-status-with-first-erroneous-sandbox [
   trace-until 100/app  # trace too long
   assume-screen 50/width, 20/height
-  1:address:array:character <- new []
-  2:address:array:character <- new []
-  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 2:address:array:character
+  1:text <- new []
+  2:text <- new []
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 2:text
   assume-console [
     # create invalid sandbox 1
     type [get foo, x:offset]
@@ -170,7 +170,7 @@ scenario run-updates-status-with-first-erroneous-sandbox [
     press F4
   ]
   run [
-    event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data, 1:address:array:character/empty-test-recipes
+    event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data, 1:text/empty-test-recipes
   ]
   # status line shows that error is in first sandbox
   screen-should-contain [
@@ -181,9 +181,9 @@ scenario run-updates-status-with-first-erroneous-sandbox [
 scenario run-updates-status-with-first-erroneous-sandbox-2 [
   trace-until 100/app  # trace too long
   assume-screen 50/width, 20/height
-  1:address:array:character <- new []
-  2:address:array:character <- new []
-  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 2:address:array:character
+  1:text <- new []
+  2:text <- new []
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 2:text
   assume-console [
     # create invalid sandbox 2
     type [get foo, x:offset]
@@ -196,7 +196,7 @@ scenario run-updates-status-with-first-erroneous-sandbox-2 [
     press F4
   ]
   run [
-    event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data, 1:address:array:character/empty-test-recipes
+    event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data, 1:text/empty-test-recipes
   ]
   # status line shows that error is in second sandbox
   screen-should-contain [
@@ -207,13 +207,13 @@ scenario run-updates-status-with-first-erroneous-sandbox-2 [
 scenario run-hides-errors-from-past-sandboxes [
   trace-until 100/app  # trace too long
   assume-screen 50/width, 20/height
-  1:address:array:character <- new []
-  2:address:array:character <- new [get foo, x:offset]  # invalid
-  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 2:address:array:character
+  1:text <- new []
+  2:text <- new [get foo, x:offset]  # invalid
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 2:text
   assume-console [
     press F4  # generate error
   ]
-  event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data, 1:address:array:character/empty-test-recipes
+  event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data, 1:text/empty-test-recipes
   assume-console [
     left-click 3, 10
     press ctrl-k
@@ -240,18 +240,18 @@ scenario run-updates-errors-for-shape-shifting-recipes [
   trace-until 100/app  # trace too long
   assume-screen 50/width, 20/height
   # define a shape-shifting recipe with an error
-  1:address:array:character <- new [recipe foo x:_elem -> z:_elem [
+  1:text <- new [recipe foo x:_elem -> z:_elem [
 local-scope
 load-ingredients
 y:address:number <- copy 0
 z <- add x, y
 ]]
-  2:address:array:character <- new [foo 2]
-  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 2:address:array:character
+  2:text <- new [foo 2]
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 2:text
   assume-console [
     press F4
   ]
-  event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data, 1:address:array:character/test-recipes
+  event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data, 1:text/test-recipes
   screen-should-contain [
     .  errors found (0)             run (F4)           .
     .                                                  .
@@ -268,7 +268,7 @@ z <- add x, y
     press F4
   ]
   run [
-    event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data, 1:address:array:character/test-recipes
+    event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data, 1:text/test-recipes
   ]
   # error should remain unchanged
   screen-should-contain [
@@ -288,17 +288,17 @@ scenario run-avoids-spurious-errors-on-reloading-shape-shifting-recipes [
   trace-until 100/app  # trace too long
   assume-screen 50/width, 20/height
   # overload a well-known shape-shifting recipe
-  1:address:array:character <- new [recipe length l:address:list:_elem -> n:number [
+  1:text <- new [recipe length l:address:list:_elem -> n:number [
 ]]
   # call code that uses other variants of it, but not it itself
-  2:address:array:character <- new [x:address:list:number <- copy 0
+  2:text <- new [x:address:list:number <- copy 0
 to-text x]
-  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 2:address:array:character
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 2:text
   # run it once
   assume-console [
     press F4
   ]
-  event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data, 1:address:array:character/test-recipes
+  event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data, 1:text/test-recipes
   # no errors anywhere on screen (can't check anything else, since to-text will return an address)
   screen-should-contain-in-color 1/red, [
     .                                                  .
@@ -316,7 +316,7 @@ to-text x]
     press F4
   ]
   run [
-    event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data, 1:address:array:character/test-recipes
+    event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data, 1:text/test-recipes
   ]
   # still no errors
   screen-should-contain-in-color 1/red, [
@@ -335,17 +335,17 @@ to-text x]
 scenario run-shows-missing-type-errors [
   trace-until 100/app  # trace too long
   assume-screen 50/width, 20/height
-  1:address:array:character <- new [ 
+  1:text <- new [ 
 def foo [
   x <- copy 0
 ]]
-  2:address:array:character <- new [foo]
-  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 2:address:array:character
+  2:text <- new [foo]
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 2:text
   assume-console [
     press F4
   ]
   run [
-    event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data, 1:address:array:character/test-recipes
+    event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data, 1:text/test-recipes
   ]
   screen-should-contain [
     .  errors found                 run (F4)           .
@@ -361,17 +361,17 @@ scenario run-shows-unbalanced-bracket-errors [
   trace-until 100/app  # trace too long
   assume-screen 50/width, 20/height
   # recipe is incomplete (unbalanced '[')
-  1:address:array:character <- new [ 
+  1:text <- new [ 
 recipe foo \\[
   x <- copy 0
 ]
-  2:address:array:character <- new [foo]
-  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 2:address:array:character
+  2:text <- new [foo]
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 2:text
   assume-console [
     press F4
   ]
   run [
-    event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data, 1:address:array:character/test-recipes
+    event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data, 1:text/test-recipes
   ]
   screen-should-contain [
     .  errors found                 run (F4)           .
@@ -389,19 +389,19 @@ recipe foo \\[
 scenario run-shows-get-on-non-container-errors [
   trace-until 100/app  # trace too long
   assume-screen 50/width, 20/height
-  1:address:array:character <- new [ 
+  1:text <- new [ 
 def foo [
   local-scope
   x:address:point <- new point:type
   get x:address:point, 1:offset
 ]]
-  2:address:array:character <- new [foo]
-  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 2:address:array:character
+  2:text <- new [foo]
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 2:text
   assume-console [
     press F4
   ]
   run [
-    event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data, 1:address:array:character/test-recipes
+    event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data, 1:text/test-recipes
   ]
   screen-should-contain [
     .  errors found                 run (F4)           .
@@ -417,20 +417,20 @@ def foo [
 scenario run-shows-non-literal-get-argument-errors [
   trace-until 100/app  # trace too long
   assume-screen 50/width, 20/height
-  1:address:array:character <- new [ 
+  1:text <- new [ 
 def foo [
   local-scope
   x:number <- copy 0
   y:address:point <- new point:type
   get *y:address:point, x:number
 ]]
-  2:address:array:character <- new [foo]
-  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 2:address:array:character
+  2:text <- new [foo]
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 2:text
   assume-console [
     press F4
   ]
   run [
-    event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data, 1:address:array:character/test-recipes
+    event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data, 1:text/test-recipes
   ]
   screen-should-contain [
     .  errors found                 run (F4)           .
@@ -447,17 +447,17 @@ scenario run-shows-errors-everytime [
   trace-until 100/app  # trace too long
   assume-screen 50/width, 20/height
   # try to run a file with an error
-  1:address:array:character <- new [ 
+  1:text <- new [ 
 def foo [
   local-scope
   x:number <- copy y:number
 ]]
-  2:address:array:character <- new [foo]
-  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 2:address:array:character
+  2:text <- new [foo]
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 2:text
   assume-console [
     press F4
   ]
-  event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data, 1:address:array:character/test-recipes
+  event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data, 1:text/test-recipes
   screen-should-contain [
     .  errors found                 run (F4)           .
     .                                                  .
@@ -471,7 +471,7 @@ def foo [
     press F4
   ]
   run [
-    event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data, 1:address:array:character/test-recipes
+    event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data, 1:text/test-recipes
   ]
   screen-should-contain [
     .  errors found                 run (F4)           .
@@ -486,8 +486,8 @@ def foo [
 scenario run-instruction-and-print-errors [
   trace-until 100/app  # trace too long
   assume-screen 50/width, 15/height
-  1:address:array:character <- new [get 1:address:point, 1:offset]
-  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character
+  1:text <- new [get 1:address:point, 1:offset]
+  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text
   assume-console [
     press F4
   ]
@@ -522,8 +522,8 @@ scenario run-instruction-and-print-errors-only-once [
   trace-until 100/app  # trace too long
   assume-screen 50/width, 10/height
   # editor contains an illegal instruction
-  1:address:array:character <- new [get 1234:number, foo:offset]
-  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character
+  1:text <- new [get 1234:number, foo:offset]
+  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text
   # run the code in the editors multiple times
   assume-console [
     press F4
@@ -551,10 +551,10 @@ scenario sandbox-can-handle-infinite-loop [
   trace-until 100/app  # trace too long
   assume-screen 50/width, 20/height
   # editor contains an infinite loop
-  1:address:array:character <- new [{
+  1:text <- new [{
 loop
 }]
-  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character
+  2:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text
   # run the sandbox
   assume-console [
     press F4
@@ -580,7 +580,7 @@ scenario sandbox-with-errors-shows-trace [
   trace-until 100/app  # trace too long
   assume-screen 50/width, 20/height
   # generate a stash and a error
-  1:address:array:character <- new [recipe foo [
+  1:text <- new [recipe foo [
 local-scope
 a:number <- next-ingredient
 b:number <- next-ingredient
@@ -588,13 +588,13 @@ stash [dividing by], b
 _, c:number <- divide-with-remainder a, b
 return b
 ]]
-  2:address:array:character <- new [foo 4, 0]
-  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 2:address:array:character
+  2:text <- new [foo 4, 0]
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 2:text
   # run
   assume-console [
     press F4
   ]
-  event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data, 1:address:array:character/test-recipes
+  event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data, 1:text/test-recipes
   # screen prints error message
   screen-should-contain [
     .  errors found (0)             run (F4)           .
@@ -612,7 +612,7 @@ return b
     left-click 4, 15
   ]
   run [
-    event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data, 1:address:array:character/test-recipes
+    event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data, 1:text/test-recipes
   ]
   # screen should expand trace
   screen-should-contain [
diff --git a/sandbox/012-editor-undo.mu b/sandbox/012-editor-undo.mu
index 14c156e9..2239560b 100644
--- a/sandbox/012-editor-undo.mu
+++ b/sandbox/012-editor-undo.mu
@@ -101,8 +101,8 @@ after <handle-special-character> [
 scenario editor-can-undo-typing [
   # create an editor and type a character
   assume-screen 10/width, 5/height
-  1:address:array:character <- new []
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  1:text <- new []
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   assume-console [
     type [0]
@@ -231,8 +231,8 @@ after <handle-undo> [
 scenario editor-can-undo-typing-multiple [
   # create an editor and type multiple characters
   assume-screen 10/width, 5/height
-  1:address:array:character <- new []
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  1:text <- new []
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   assume-console [
     type [012]
@@ -257,8 +257,8 @@ scenario editor-can-undo-typing-multiple [
 scenario editor-can-undo-typing-multiple-2 [
   # create an editor with some text
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [a]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  1:text <- new [a]
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   # type some characters
   assume-console [
@@ -303,8 +303,8 @@ scenario editor-can-undo-typing-multiple-2 [
 scenario editor-can-undo-typing-enter [
   # create an editor with some text
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [  abc]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  1:text <- new [  abc]
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   # new line
   assume-console [
@@ -366,8 +366,8 @@ scenario editor-can-undo-typing-enter [
 scenario editor-redo-typing [
   # create an editor, type something, undo
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [a]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  1:text <- new [a]
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   assume-console [
     type [012]
@@ -430,8 +430,8 @@ after <handle-redo> [
 scenario editor-redo-typing-empty [
   # create an editor, type something, undo
   assume-screen 10/width, 5/height
-  1:address:array:character <- new []
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  1:text <- new []
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   assume-console [
     type [012]
@@ -476,10 +476,10 @@ scenario editor-redo-typing-empty [
 scenario editor-work-clears-redo-stack [
   # create an editor with some text, do some work, undo
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abc
+  1:text <- new [abc
 def
 ghi]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   assume-console [
     type [1]
@@ -518,8 +518,8 @@ ghi]
 scenario editor-can-redo-typing-and-enter-and-tab [
   # create an editor
   assume-screen 10/width, 5/height
-  1:address:array:character <- new []
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  1:text <- new []
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   # insert some text and tabs, hit enter, some more text and tabs
   assume-console [
@@ -675,10 +675,10 @@ scenario editor-can-redo-typing-and-enter-and-tab [
 scenario editor-can-undo-touch [
   # create an editor with some text
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abc
+  1:text <- new [abc
 def
 ghi]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   # move the cursor
   assume-console [
@@ -765,10 +765,10 @@ after <handle-undo> [
 scenario editor-can-undo-left-arrow [
   # create an editor with some text
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abc
+  1:text <- new [abc
 def
 ghi]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   # move the cursor
   assume-console [
@@ -809,10 +809,10 @@ ghi]
 scenario editor-can-undo-up-arrow [
   # create an editor with some text
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abc
+  1:text <- new [abc
 def
 ghi]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   # move the cursor
   assume-console [
@@ -859,10 +859,10 @@ ghi]
 scenario editor-can-undo-down-arrow [
   # create an editor with some text
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abc
+  1:text <- new [abc
 def
 ghi]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   # move the cursor
   assume-console [
@@ -903,10 +903,10 @@ ghi]
 scenario editor-can-undo-ctrl-a [
   # create an editor with some text
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abc
+  1:text <- new [abc
 def
 ghi]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   # move the cursor, then to start of line
   assume-console [
@@ -947,10 +947,10 @@ ghi]
 scenario editor-can-undo-home [
   # create an editor with some text
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abc
+  1:text <- new [abc
 def
 ghi]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   # move the cursor, then to start of line
   assume-console [
@@ -991,10 +991,10 @@ ghi]
 scenario editor-can-undo-ctrl-e [
   # create an editor with some text
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abc
+  1:text <- new [abc
 def
 ghi]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   # move the cursor, then to start of line
   assume-console [
@@ -1035,10 +1035,10 @@ ghi]
 scenario editor-can-undo-end [
   # create an editor with some text
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abc
+  1:text <- new [abc
 def
 ghi]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   # move the cursor, then to start of line
   assume-console [
@@ -1079,10 +1079,10 @@ ghi]
 scenario editor-can-undo-multiple-arrows-in-the-same-direction [
   # create an editor with some text
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abc
+  1:text <- new [abc
 def
 ghi]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   # move the cursor
   assume-console [
@@ -1133,10 +1133,10 @@ ghi]
 scenario editor-redo-touch [
   # create an editor with some text, click on a character, undo
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abc
+  1:text <- new [abc
 def
 ghi]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   assume-console [
     left-click 3, 1
@@ -1190,8 +1190,8 @@ after <handle-redo> [
 scenario editor-separates-undo-insert-from-undo-cursor-move [
   # create an editor, type some text, move the cursor, type some more text
   assume-screen 10/width, 5/height
-  1:address:array:character <- new []
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  1:text <- new []
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   assume-console [
     type [abc]
@@ -1339,8 +1339,8 @@ scenario editor-separates-undo-insert-from-undo-cursor-move [
 scenario editor-can-undo-and-redo-backspace [
   # create an editor
   assume-screen 10/width, 5/height
-  1:address:array:character <- new []
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  1:text <- new []
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   # insert some text and hit backspace
   assume-console [
@@ -1484,8 +1484,8 @@ after <handle-redo> [
 scenario editor-can-undo-and-redo-delete [
   # create an editor
   assume-screen 10/width, 5/height
-  1:address:array:character <- new []
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  1:text <- new []
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   # insert some text and hit delete and backspace a few times
   assume-console [
@@ -1673,9 +1673,9 @@ before <delete-character-end> [
 scenario editor-can-undo-and-redo-ctrl-k [
   # create an editor
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abc
+  1:text <- new [abc
 def]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   # insert some text and hit delete and backspace a few times
   assume-console [
@@ -1775,9 +1775,9 @@ before <delete-to-end-of-line-end> [
 scenario editor-can-undo-and-redo-ctrl-u [
   # create an editor
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [abc
+  1:text <- new [abc
 def]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   # insert some text and hit delete and backspace a few times
   assume-console [
@@ -1876,8 +1876,8 @@ before <delete-to-start-of-line-end> [
 scenario editor-can-undo-and-redo-ctrl-u-2 [
   # create an editor
   assume-screen 10/width, 5/height
-  1:address:array:character <- new []
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 10/right
+  1:text <- new []
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 10/right
   editor-render screen, 2:address:editor-data
   # insert some text and hit delete and backspace a few times
   assume-console [