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, 435 insertions, 435 deletions

diff --git a/edit/001-editor.mu b/edit/001-editor.mu
index be210b95..f59c43e1 100644
--- a/edit/001-editor.mu
+++ b/edit/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/edit/002-typing.mu b/edit/002-typing.mu
index effdf5ae..f30e50ec 100644
--- a/edit/002-typing.mu
+++ b/edit/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 [
@@ -741,8 +741,8 @@ 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]
@@ -769,7 +769,7 @@ 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 [
@@ -796,8 +796,8 @@ 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]
@@ -832,8 +832,8 @@ 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]
@@ -938,8 +938,8 @@ 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]
@@ -958,8 +958,8 @@ 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
   ]
@@ -985,10 +985,10 @@ 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
@@ -1009,10 +1009,10 @@ 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/edit/003-shortcuts.mu b/edit/003-shortcuts.mu
index 40956cb3..0de84d48 100644
--- a/edit/003-shortcuts.mu
+++ b/edit/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 [
@@ -218,9 +218,9 @@ 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
@@ -245,9 +245,9 @@ 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
@@ -271,8 +271,8 @@ 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 [
@@ -304,8 +304,8 @@ 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 [
@@ -393,8 +393,8 @@ 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 [
@@ -490,9 +490,9 @@ 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
@@ -525,9 +525,9 @@ 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
@@ -550,8 +550,8 @@ 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 [
@@ -580,8 +580,8 @@ 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
@@ -616,8 +616,8 @@ 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 [
@@ -645,9 +645,9 @@ 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
@@ -676,8 +676,8 @@ 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 [
@@ -719,9 +719,9 @@ 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)
@@ -744,10 +744,10 @@ 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
@@ -772,10 +772,10 @@ 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
@@ -801,10 +801,10 @@ 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
@@ -829,8 +829,8 @@ 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 [
@@ -860,9 +860,9 @@ 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 [
@@ -892,9 +892,9 @@ 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 [
@@ -927,9 +927,9 @@ 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 [
@@ -1043,9 +1043,9 @@ 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 [
@@ -1079,9 +1079,9 @@ 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 [
@@ -1116,10 +1116,10 @@ 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
@@ -1156,9 +1156,9 @@ 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)
@@ -1261,9 +1261,9 @@ 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 [
@@ -1299,9 +1299,9 @@ 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
@@ -1374,9 +1374,9 @@ 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
@@ -1399,9 +1399,9 @@ 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 [
@@ -1423,9 +1423,9 @@ 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'
@@ -1450,9 +1450,9 @@ 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
@@ -1542,9 +1542,9 @@ 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
@@ -1567,9 +1567,9 @@ 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'
@@ -1592,9 +1592,9 @@ 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'
@@ -1619,9 +1619,9 @@ 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
@@ -1682,9 +1682,9 @@ 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
@@ -1705,9 +1705,9 @@ 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
@@ -1728,9 +1728,9 @@ 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
@@ -1753,9 +1753,9 @@ 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
@@ -1808,9 +1808,9 @@ 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
@@ -1831,9 +1831,9 @@ 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
@@ -1854,9 +1854,9 @@ 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
@@ -1877,9 +1877,9 @@ 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
@@ -1900,9 +1900,9 @@ 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
@@ -1927,11 +1927,11 @@ scenario editor-can-scroll-down-using-arrow-keys [
   # screen has 1 line for menu + 3 lines
   assume-screen 10/width, 4/height
   # initialize editor with >3 lines
-  1:address:array:character <- new [a
+  1:text <- new [a
 b
 c
 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
   screen-should-contain [
     .          .
     .a         .
@@ -2005,11 +2005,11 @@ scenario editor-scrolls-down-past-wrapped-line-using-arrow-keys [
   assume-screen 10/width, 4/height
   # initialize editor with a long, wrapped line and more than a screen of
   # other lines
-  1:address:array:character <- new [abcdef
+  1:text <- new [abcdef
 g
 h
 i]
-  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
   screen-should-contain [
     .          .
     .abcd↩     .
@@ -2037,11 +2037,11 @@ scenario editor-scrolls-down-past-wrapped-line-using-arrow-keys-2 [
   # screen has 1 line for menu + 3 lines
   assume-screen 10/width, 4/height
   # editor starts with a long line wrapping twice
-  1:address:array:character <- new [abcdefghij
+  1:text <- new [abcdefghij
 k
 l
 m]
-  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
   # position cursor at last line, then try to move further down
   assume-console [
     left-click 3, 0
@@ -2077,10 +2077,10 @@ scenario editor-scrolls-down-when-line-wraps [
   # screen has 1 line for menu + 3 lines
   assume-screen 5/width, 4/height
   # editor contains a long line in the third line
-  1:address:array:character <- new [a
+  1:text <- new [a
 b
 cdef]
-  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
   # position cursor at end, type a character
   assume-console [
     left-click 3, 4
@@ -2107,10 +2107,10 @@ cdef]
 scenario editor-scrolls-down-on-newline [
   assume-screen 5/width, 4/height
   # position cursor after last line and type newline
-  1:address:array:character <- new [a
+  1:text <- new [a
 b
 c]
-  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 [
     left-click 3, 4
     type [
@@ -2138,10 +2138,10 @@ scenario editor-scrolls-down-on-right-arrow [
   # screen has 1 line for menu + 3 lines
   assume-screen 5/width, 4/height
   # editor contains a wrapped line
-  1:address:array:character <- new [a
+  1:text <- new [a
 b
 cdefgh]
-  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
   # position cursor at end of screen and try to move right
   assume-console [
     left-click 3, 3
@@ -2169,11 +2169,11 @@ scenario editor-scrolls-down-on-right-arrow-2 [
   # screen has 1 line for menu + 3 lines
   assume-screen 5/width, 4/height
   # editor contains more lines than can fit on screen
-  1:address:array:character <- new [a
+  1:text <- new [a
 b
 c
 d]
-  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
   # position cursor at end of screen and try to move right
   assume-console [
     left-click 3, 3
@@ -2199,9 +2199,9 @@ d]
 
 scenario editor-scrolls-at-end-on-down-arrow [
   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
   # try to move down past end of text
@@ -2266,14 +2266,14 @@ scenario editor-combines-page-and-line-scroll [
   # screen has 1 line for menu + 3 lines
   assume-screen 10/width, 4/height
   # initialize editor with a few pages of lines
-  1:address:array:character <- new [a
+  1:text <- new [a
 b
 c
 d
 e
 f
 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
   # scroll down one page and one line
   assume-console [
     press page-down
@@ -2298,11 +2298,11 @@ scenario editor-can-scroll-up-using-arrow-keys [
   # screen has 1 line for menu + 3 lines
   assume-screen 10/width, 4/height
   # initialize editor with >3 lines
-  1:address:array:character <- new [a
+  1:text <- new [a
 b
 c
 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
   screen-should-contain [
     .          .
     .a         .
@@ -2386,11 +2386,11 @@ scenario editor-scrolls-up-past-wrapped-line-using-arrow-keys [
   assume-screen 10/width, 4/height
   # initialize editor with a long, wrapped line and more than a screen of
   # other lines
-  1:address:array:character <- new [abcdef
+  1:text <- new [abcdef
 g
 h
 i]
-  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
   screen-should-contain [
     .          .
     .abcd↩     .
@@ -2430,11 +2430,11 @@ scenario editor-scrolls-up-past-wrapped-line-using-arrow-keys-2 [
   # screen has 1 line for menu + 4 lines
   assume-screen 10/width, 5/height
   # editor starts with a long line wrapping twice, occupying 3 of the 4 lines
-  1:address:array:character <- new [abcdefghij
+  1:text <- new [abcdefghij
 k
 l
 m]
-  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
   # position cursor at top of second page
   assume-console [
     press page-down
@@ -2503,11 +2503,11 @@ scenario editor-scrolls-up-past-wrapped-line-using-arrow-keys-3 [
   assume-screen 10/width, 4/height
   # initialize editor with a long, wrapped line and more than a screen of
   # other lines
-  1:address:array:character <- new [abcdef
+  1:text <- new [abcdef
 g
 h
 i]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 6/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 6/right
   screen-should-contain [
     .          .
     .abcde↩    .
@@ -2547,13 +2547,13 @@ i]
 scenario editor-scrolls-up-past-wrapped-line-using-arrow-keys-4 [
   assume-screen 10/width, 4/height
   # initialize editor with some lines around an empty line
-  1:address:array:character <- new [a
+  1:text <- new [a
 b
 
 c
 d
 e]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 6/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 6/right
   assume-console [
     press page-down
   ]
@@ -2596,12 +2596,12 @@ scenario editor-scrolls-up-on-left-arrow [
   # screen has 1 line for menu + 3 lines
   assume-screen 5/width, 4/height
   # editor contains >3 lines
-  1:address:array:character <- new [a
+  1:text <- new [a
 b
 c
 d
 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
   # position cursor at top of second page
   assume-console [
     press page-down
@@ -2641,11 +2641,11 @@ scenario editor-can-scroll-up-to-start-of-file [
   # screen has 1 line for menu + 3 lines
   assume-screen 10/width, 4/height
   # initialize editor with >3 lines
-  1:address:array:character <- new [a
+  1:text <- new [a
 b
 c
 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
   screen-should-contain [
     .          .
     .a         .
@@ -2689,11 +2689,11 @@ d]
 
 scenario editor-can-scroll [
   assume-screen 10/width, 4/height
-  1:address:array:character <- new [a
+  1:text <- new [a
 b
 c
 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
   screen-should-contain [
     .          .
     .a         .
@@ -2776,9 +2776,9 @@ def page-down editor:address:editor-data -> editor:address:editor-data [
 
 scenario editor-does-not-scroll-past-end [
   assume-screen 10/width, 4/height
-  1:address:array:character <- new [a
+  1:text <- new [a
 b]
-  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
   screen-should-contain [
     .          .
@@ -2806,11 +2806,11 @@ scenario editor-starts-next-page-at-start-of-wrapped-line [
   # screen has 1 line for menu + 3 lines for text
   assume-screen 10/width, 4/height
   # editor contains a long last line
-  1:address:array:character <- new [a
+  1:text <- new [a
 b
 cdefgh]
   # editor screen triggers wrap of last line
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 4/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 4/right
   # some part of last line is not displayed
   screen-should-contain [
     .          .
@@ -2839,9 +2839,9 @@ scenario editor-starts-next-page-at-start-of-wrapped-line-2 [
   assume-screen 10/width, 4/height
   # editor contains a very long line that occupies last two lines of screen
   # and still has something left over
-  1:address:array:character <- new [a
+  1:text <- new [a
 bcdefgh]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 4/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 4/right
   # some part of last line is not displayed
   screen-should-contain [
     .          .
@@ -2869,11 +2869,11 @@ bcdefgh]
 
 scenario editor-can-scroll-up [
   assume-screen 10/width, 4/height
-  1:address:array:character <- new [a
+  1:text <- new [a
 b
 c
 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
   screen-should-contain [
     .          .
     .a         .
@@ -2965,7 +2965,7 @@ scenario editor-can-scroll-up-multiple-pages [
   # screen has 1 line for menu + 3 lines
   assume-screen 10/width, 4/height
   # initialize editor with 8 lines
-  1:address:array:character <- new [a
+  1:text <- new [a
 b
 c
 d
@@ -2973,7 +2973,7 @@ e
 f
 g
 h]
-  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
   screen-should-contain [
     .          .
     .a         .
@@ -3029,7 +3029,7 @@ scenario editor-can-scroll-up-wrapped-lines [
   # screen has 1 line for menu + 5 lines for text
   assume-screen 10/width, 6/height
   # editor contains a long line in the first page
-  1:address:array:character <- new [a
+  1:text <- new [a
 b
 cdefgh
 i
@@ -3040,7 +3040,7 @@ m
 n
 o]
   # editor screen triggers wrap of last line
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 4/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 4/right
   # some part of last line is not displayed
   screen-should-contain [
     .          .
@@ -3091,9 +3091,9 @@ scenario editor-can-scroll-up-wrapped-lines-2 [
   assume-screen 10/width, 4/height
   # editor contains a very long line that occupies last two lines of screen
   # and still has something left over
-  1:address:array:character <- new [a
+  1:text <- new [a
 bcdefgh]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 4/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 4/right
   # some part of last line is not displayed
   screen-should-contain [
     .          .
@@ -3134,7 +3134,7 @@ bcdefgh]
 scenario editor-can-scroll-up-past-nonempty-lines [
   assume-screen 10/width, 4/height
   # text with empty line in second screen
-  1:address:array:character <- new [axx
+  1:text <- new [axx
 bxx
 cxx
 dxx
@@ -3143,7 +3143,7 @@ fxx
 gxx
 hxx
 ]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 4/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 4/right
   screen-should-contain [
     .          .
     .axx       .
@@ -3192,7 +3192,7 @@ hxx
 scenario editor-can-scroll-up-past-empty-lines [
   assume-screen 10/width, 4/height
   # text with empty line in second screen
-  1:address:array:character <- new [axy
+  1:text <- new [axy
 bxy
 cxy
 
@@ -3201,7 +3201,7 @@ exy
 fxy
 gxy
 ]
-  2:address:editor-data <- new-editor 1:address:array:character, screen:address:screen, 0/left, 4/right
+  2:address:editor-data <- new-editor 1:text, screen:address:screen, 0/left, 4/right
   screen-should-contain [
     .          .
     .axy       .
diff --git a/edit/004-programming-environment.mu b/edit/004-programming-environment.mu
index e83aa642..261be52b 100644
--- a/edit/004-programming-environment.mu
+++ b/edit/004-programming-environment.mu
@@ -6,8 +6,8 @@
 def! main [
   local-scope
   open-console
-  initial-recipe:address:array:character <- restore [recipes.mu]
-  initial-sandbox:address:array:character <- new []
+  initial-recipe:text <- restore [recipes.mu]
+  initial-sandbox:text <- new []
   hide-screen 0/screen
   env:address:programming-environment-data <- new-programming-environment 0/screen, initial-recipe, initial-sandbox
   render-all 0/screen, env, render
@@ -296,9 +296,9 @@ scenario point-at-multiple-editors [
   trace-until 100/app  # trace too long
   assume-screen 30/width, 5/height
   # initialize both halves of screen
-  1:address:array:character <- new [abc]
-  2:address:array:character <- new [def]
-  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character, 2:address:array:character
+  1:text <- new [abc]
+  2:text <- new [def]
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text, 2:text
   # focus on both sides
   assume-console [
     left-click 1, 1
@@ -322,9 +322,9 @@ scenario edit-multiple-editors [
   trace-until 100/app  # trace too long
   assume-screen 30/width, 5/height
   # initialize both halves of screen
-  1:address:array:character <- new [abc]
-  2:address:array:character <- new [def]
-  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character, 2:address:array:character
+  1:text <- new [abc]
+  2:text <- new [def]
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text, 2:text
   render-all screen, 3:address:programming-environment-data, render
   # type one letter in each of them
   assume-console [
@@ -367,9 +367,9 @@ scenario multiple-editors-cover-only-their-own-areas [
   trace-until 100/app  # trace too long
   assume-screen 60/width, 10/height
   run [
-    1:address:array:character <- new [abc]
-    2:address:array:character <- new [def]
-    3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character, 2:address:array:character
+    1:text <- new [abc]
+    2:text <- new [def]
+    3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text, 2:text
     render-all screen, 3:address:programming-environment-data, render
   ]
   # divider isn't messed up
@@ -385,9 +385,9 @@ scenario multiple-editors-cover-only-their-own-areas [
 scenario editor-in-focus-keeps-cursor [
   trace-until 100/app  # trace too long
   assume-screen 30/width, 5/height
-  1:address:array:character <- new [abc]
-  2:address:array:character <- new [def]
-  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character, 2:address:array:character
+  1:text <- new [abc]
+  2:text <- new [def]
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text, 2:text
   render-all screen, 3:address:programming-environment-data, render
   # initialize programming environment and highlight cursor
   assume-console []
@@ -425,10 +425,10 @@ scenario backspace-in-sandbox-editor-joins-lines [
 #?   trace-until 100/app  # trace too long
   assume-screen 30/width, 5/height
   # initialize sandbox side with two lines
-  1:address:array:character <- new []
-  2:address:array:character <- new [abc
+  1:text <- new []
+  2:text <- new [abc
 def]
-  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character, 2:address:array:character
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text, 2:text
   render-all screen, 3:address:programming-environment-data, render
   screen-should-contain [
     .           run (F4)           .
diff --git a/edit/005-sandbox.mu b/edit/005-sandbox.mu
index 1e203718..b49e342e 100644
--- a/edit/005-sandbox.mu
+++ b/edit/005-sandbox.mu
@@ -10,8 +10,8 @@
 def! main [
   local-scope
   open-console
-  initial-recipe:address:array:character <- restore [recipes.mu]
-  initial-sandbox:address:array:character <- new []
+  initial-recipe:text <- restore [recipes.mu]
+  initial-sandbox:text <- new []
   hide-screen 0/screen
   env:address:programming-environment-data <- new-programming-environment 0/screen, initial-recipe, initial-sandbox
   env <- restore-sandboxes env
@@ -45,10 +45,10 @@ scenario run-and-show-results [
   trace-until 100/app  # trace too long
   assume-screen 100/width, 15/height
   # recipe editor is empty
-  1:address:array:character <- new []
+  1:text <- new []
   # sandbox editor contains an instruction without storing outputs
-  2:address:array:character <- new [divide-with-remainder 11, 3]
-  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character, 2:address:array:character
+  2:text <- new [divide-with-remainder 11, 3]
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text, 2:text
   # run the code in the editors
   assume-console [
     press F4
@@ -151,7 +151,7 @@ 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
@@ -191,7 +191,7 @@ def update-recipes env:address:programming-environment-data, screen:address:scre
   local-scope
   load-ingredients
   recipes:address:editor-data <- get *env, recipes:offset
-  in:address:array:character <- editor-contents recipes
+  in:text <- editor-contents recipes
   save [recipes.mu], in  # newlayer: persistence
   reload in
   errors-found? <- copy 0/false
@@ -201,8 +201,8 @@ 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
 ]
@@ -224,8 +224,8 @@ 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
@@ -277,11 +277,11 @@ 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
@@ -424,8 +424,8 @@ def restore-sandboxes env:address:programming-environment-data -> env:address:pr
   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
@@ -519,15 +519,15 @@ scenario run-updates-results [
   trace-until 100/app  # trace too long
   assume-screen 100/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 [ 
 recipe foo [
 local-scope
 z:number <- add 2, 2
 reply 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, 1:address:array:character, 2:address:array:character
+  2:text <- new [foo]
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text, 2:text
   # run the code in the editors
   assume-console [
     press F4
@@ -572,10 +572,10 @@ scenario run-instruction-manages-screen-per-sandbox [
   trace-until 100/app  # trace too long
   assume-screen 100/width, 20/height
   # left editor is empty
-  1:address:array:character <- new []
+  1:text <- new []
   # right editor contains an instruction
-  2:address:array:character <- new [print-integer screen, 4]
-  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character, 2:address:array:character
+  2:text <- new [print-integer screen, 4]
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text, 2:text
   # run the code in the editor
   assume-console [
     press F4
@@ -622,16 +622,16 @@ 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]
@@ -798,9 +798,9 @@ scenario scrolling-down-past-bottom-of-sandbox-editor [
   trace-until 100/app  # trace too long
   assume-screen 100/width, 10/height
   # initialize sandbox side
-  1:address:array:character <- new []
-  2:address:array:character <- new [add 2, 2]
-  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character, 2:address:array:character
+  1:text <- new []
+  2:text <- new [add 2, 2]
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text, 2:text
   render-all screen, 3:address:programming-environment-data, render
   assume-console [
     # create a sandbox
@@ -931,11 +931,11 @@ scenario scrolling-down-on-recipe-side [
   trace-until 100/app  # trace too long
   assume-screen 100/width, 10/height
   # initialize sandbox side and create a sandbox
-  1:address:array:character <- new [ 
+  1:text <- new [ 
 ]
   # create a sandbox
-  2:address:array:character <- new [add 2, 2]
-  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character, 2:address:array:character
+  2:text <- new [add 2, 2]
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text, 2:text
   render-all screen, 3:address:programming-environment-data, render
   assume-console [
     press F4
@@ -964,9 +964,9 @@ scenario scrolling-through-multiple-sandboxes [
   trace-until 100/app  # trace too long
   assume-screen 100/width, 10/height
   # initialize environment
-  1:address:array:character <- new []
-  2:address:array:character <- new []
-  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character, 2:address:array:character
+  1:text <- new []
+  2:text <- new []
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text, 2:text
   render-all screen, 3:address:programming-environment-data, render
   # create 2 sandboxes
   assume-console [
@@ -1116,9 +1116,9 @@ scenario scrolling-manages-sandbox-index-correctly [
   trace-until 100/app  # trace too long
   assume-screen 100/width, 10/height
   # initialize environment
-  1:address:array:character <- new []
-  2:address:array:character <- new []
-  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character, 2:address:array:character
+  1:text <- new []
+  2:text <- new []
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text, 2:text
   render-all screen, 3:address:programming-environment-data, render
   # create a sandbox
   assume-console [
diff --git a/edit/006-sandbox-copy.mu b/edit/006-sandbox-copy.mu
index a5a98d4d..a08a1ec7 100644
--- a/edit/006-sandbox-copy.mu
+++ b/edit/006-sandbox-copy.mu
@@ -5,16 +5,16 @@ scenario copy-a-sandbox-to-editor [
   trace-until 100/app  # trace too long
   assume-screen 100/width, 10/height
   # basic recipe
-  1:address:array:character <- new [ 
+  1:text <- new [ 
 recipe foo [
   reply 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, 1:address:array:character, 2:address:array:character
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text, 2:text
   event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data
   screen-should-contain [
     .                                                                                 run (F4)           .
@@ -67,16 +67,16 @@ scenario copy-a-sandbox-to-editor-2 [
   trace-until 100/app  # trace too long
   assume-screen 100/width, 10/height
   # basic recipe
-  1:address:array:character <- new [ 
+  1:text <- new [ 
 recipe foo [
   reply 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, 1:address:array:character, 2:address:array:character
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text, 2:text
   event-loop screen:address:screen, console:address:console, 3: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
@@ -224,16 +224,16 @@ scenario copy-fails-if-sandbox-editor-not-empty [
   trace-until 100/app  # trace too long
   assume-screen 100/width, 10/height
   # basic recipe
-  1:address:array:character <- new [ 
+  1:text <- new [ 
 recipe foo [
   reply 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, 1:address:array:character, 2:address:array:character
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text, 2:text
   event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data
   screen-should-contain [
     .                                                                                 run (F4)           .
diff --git a/edit/007-sandbox-delete.mu b/edit/007-sandbox-delete.mu
index def5c0c5..3dac73f6 100644
--- a/edit/007-sandbox-delete.mu
+++ b/edit/007-sandbox-delete.mu
@@ -3,9 +3,9 @@
 scenario deleting-sandboxes [
   trace-until 100/app  # trace too long
   assume-screen 100/width, 15/height
-  1:address:array:character <- new []
-  2:address:array:character <- new []
-  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character, 2:address:array:character
+  1:text <- new []
+  2:text <- new []
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text, 2:text
   # run a few commands
   assume-console [
     left-click 1, 80
@@ -151,9 +151,9 @@ scenario deleting-sandbox-after-scroll [
   trace-until 100/app  # trace too long
   assume-screen 100/width, 10/height
   # initialize environment
-  1:address:array:character <- new []
-  2:address:array:character <- new []
-  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character, 2:address:array:character
+  1:text <- new []
+  2:text <- new []
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text, 2:text
   render-all screen, 3:address:programming-environment-data, render
   # create 2 sandboxes and scroll to second
   assume-console [
@@ -197,9 +197,9 @@ scenario deleting-top-sandbox-after-scroll [
   trace-until 100/app  # trace too long
   assume-screen 100/width, 10/height
   # initialize environment
-  1:address:array:character <- new []
-  2:address:array:character <- new []
-  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character, 2:address:array:character
+  1:text <- new []
+  2:text <- new []
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text, 2:text
   render-all screen, 3:address:programming-environment-data, render
   # create 2 sandboxes and scroll to second
   assume-console [
@@ -243,9 +243,9 @@ scenario deleting-final-sandbox-after-scroll [
   trace-until 100/app  # trace too long
   assume-screen 100/width, 10/height
   # initialize environment
-  1:address:array:character <- new []
-  2:address:array:character <- new []
-  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character, 2:address:array:character
+  1:text <- new []
+  2:text <- new []
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text, 2:text
   render-all screen, 3:address:programming-environment-data, render
   # create 2 sandboxes and scroll to second
   assume-console [
@@ -291,9 +291,9 @@ scenario deleting-updates-sandbox-count [
   trace-until 100/app  # trace too long
   assume-screen 100/width, 10/height
   # initialize environment
-  1:address:array:character <- new []
-  2:address:array:character <- new []
-  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character, 2:address:array:character
+  1:text <- new []
+  2:text <- new []
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text, 2:text
   render-all screen, 3:address:programming-environment-data, render
   # create 2 sandboxes
   assume-console [
diff --git a/edit/008-sandbox-edit.mu b/edit/008-sandbox-edit.mu
index b208c277..2b6a1179 100644
--- a/edit/008-sandbox-edit.mu
+++ b/edit/008-sandbox-edit.mu
@@ -4,16 +4,16 @@ scenario clicking-on-a-sandbox-moves-it-to-editor [
   trace-until 100/app  # trace too long
   assume-screen 100/width, 10/height
   # basic recipe
-  1:address:array:character <- new [ 
+  1:text <- new [ 
 recipe foo [
   reply 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, 1:address:array:character, 2:address:array:character
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text, 2:text
   event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data
   screen-should-contain [
     .                                                                                 run (F4)           .
@@ -64,16 +64,16 @@ scenario clicking-on-a-sandbox-moves-it-to-editor-2 [
   trace-until 100/app  # trace too long
   assume-screen 100/width, 10/height
   # basic recipe
-  1:address:array:character <- new [ 
+  1:text <- new [ 
 recipe foo [
   reply 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, 1:address:array:character, 2:address:array:character
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text, 2:text
   event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data
   screen-should-contain [
     .                                                                                 run (F4)           .
@@ -163,7 +163,7 @@ 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
@@ -177,10 +177,10 @@ scenario sandbox-with-print-can-be-edited [
   trace-until 100/app  # trace too long
   assume-screen 100/width, 20/height
   # left editor is empty
-  1:address:array:character <- new []
+  1:text <- new []
   # right editor contains an instruction
-  2:address:array:character <- new [print-integer screen, 4]
-  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character, 2:address:array:character
+  2:text <- new [print-integer screen, 4]
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text, 2:text
   # run the sandbox
   assume-console [
     press F4
@@ -221,9 +221,9 @@ scenario editing-sandbox-after-scrolling-resets-scroll [
   trace-until 100/app  # trace too long
   assume-screen 100/width, 10/height
   # initialize environment
-  1:address:array:character <- new []
-  2:address:array:character <- new []
-  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character, 2:address:array:character
+  1:text <- new []
+  2:text <- new []
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text, 2:text
   render-all screen, 3:address:programming-environment-data, render
   # create 2 sandboxes and scroll to second
   assume-console [
@@ -269,9 +269,9 @@ scenario editing-sandbox-updates-sandbox-count [
   trace-until 100/app  # trace too long
   assume-screen 100/width, 10/height
   # initialize environment
-  1:address:array:character <- new []
-  2:address:array:character <- new []
-  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character, 2:address:array:character
+  1:text <- new []
+  2:text <- new []
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text, 2:text
   render-all screen, 3:address:programming-environment-data, render
   # create 2 sandboxes
   assume-console [
diff --git a/edit/009-sandbox-test.mu b/edit/009-sandbox-test.mu
index 05738626..b02461a1 100644
--- a/edit/009-sandbox-test.mu
+++ b/edit/009-sandbox-test.mu
@@ -4,16 +4,16 @@ scenario sandbox-click-on-result-toggles-color-to-green [
   trace-until 100/app  # trace too long
   assume-screen 100/width, 10/height
   # basic recipe
-  1:address:array:character <- new [ 
+  1:text <- new [ 
 recipe foo [
   reply 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, 1:address:array:character, 2:address:array:character
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text, 2:text
   event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data
   screen-should-contain [
     .                                                                                 run (F4)           .
@@ -93,7 +93,7 @@ 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
@@ -167,7 +167,7 @@ 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
@@ -176,7 +176,7 @@ 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
   }
 ]
@@ -186,7 +186,7 @@ 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/edit/010-sandbox-trace.mu b/edit/010-sandbox-trace.mu
index 38cf80af..8a860d31 100644
--- a/edit/010-sandbox-trace.mu
+++ b/edit/010-sandbox-trace.mu
@@ -4,16 +4,16 @@ scenario sandbox-click-on-code-toggles-app-trace [
   trace-until 100/app  # trace too long
   assume-screen 100/width, 10/height
   # basic recipe
-  1:address:array:character <- new [ 
+  1:text <- new [ 
 recipe foo [
   stash [abc]
 ]]
   # 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, 1:address:array:character, 2:address:array:character
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text, 2:text
   event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data
   screen-should-contain [
     .                                                                                 run (F4)           .
@@ -80,17 +80,17 @@ scenario sandbox-shows-app-trace-and-result [
   trace-until 100/app  # trace too long
   assume-screen 100/width, 10/height
   # basic recipe
-  1:address:array:character <- new [ 
+  1:text <- new [ 
 recipe foo [
   stash [abc]
   reply 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, 1:address:array:character, 2:address:array:character
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text, 2:text
   event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data
   screen-should-contain [
     .                                                                                 run (F4)           .
@@ -127,14 +127,14 @@ recipe foo [
 scenario clicking-on-app-trace-does-nothing [
   trace-until 100/app  # trace too long
   assume-screen 100/width, 10/height
-  1:address:array:character <- new []
+  1:text <- new []
   # create and expand the trace
-  2:address:array:character <- new [stash 123456789]
+  2:text <- new [stash 123456789]
   assume-console [
     press F4
     left-click 4, 51
   ]
-  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character, 2:address:array:character
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text, 2:text
   event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data
   screen-should-contain [
     .                                                                                 run (F4)           .
@@ -177,8 +177,8 @@ 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
@@ -250,7 +250,7 @@ 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/edit/011-errors.mu b/edit/011-errors.mu
index 774aedb1..6498d9a5 100644
--- a/edit/011-errors.mu
+++ b/edit/011-errors.mu
@@ -9,9 +9,9 @@ def! update-recipes env:address:programming-environment-data, screen:address:scr
   local-scope
   load-ingredients
   recipes:address:editor-data <- get *env, recipes:offset
-  in:address:array:character <- editor-contents recipes
+  in:text <- editor-contents recipes
   save [recipes.mu], in
-  recipe-errors:address:array:character <- reload in
+  recipe-errors:text <- reload in
   *env <- put *env, recipe-errors:offset, recipe-errors
   # if recipe editor has errors, stop
   {
@@ -25,7 +25,7 @@ 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
@@ -34,7 +34,7 @@ before <render-components-end> [
 
 before <render-recipe-components-end> [
   {
-    recipe-errors:address:array:character <- get *env, recipe-errors:offset
+    recipe-errors:text <- get *env, recipe-errors:offset
     break-unless recipe-errors
     row, screen <- render-text screen, recipe-errors, left, right, 1/red, row
   }
@@ -67,8 +67,8 @@ 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
   }
 ]
@@ -80,8 +80,8 @@ 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, 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
@@ -105,7 +105,7 @@ 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
     row, screen <- render-text screen, sandbox-errors, left, right, 1/red, row
@@ -117,12 +117,12 @@ after <render-sandbox-trace-done> [
 scenario run-shows-errors-in-get [
   trace-until 100/app  # trace too long
   assume-screen 100/width, 15/height
-  1:address:array:character <- new [ 
+  1:text <- new [ 
 recipe foo [
   get 123:number, foo:offset
 ]]
-  2:address:array:character <- new [foo]
-  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character, 2:address:array:character
+  2:text <- new [foo]
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text, 2:text
   assume-console [
     press F4
   ]
@@ -157,9 +157,9 @@ recipe foo [
 scenario run-updates-status-with-first-erroneous-sandbox [
   trace-until 100/app  # trace too long
   assume-screen 100/width, 15/height
-  1:address:array:character <- new []
-  2:address:array:character <- new []
-  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character, 2:address:array:character
+  1:text <- new []
+  2:text <- new []
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text, 2:text
   assume-console [
     left-click 3, 80
     # create invalid sandbox 1
@@ -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 100/width, 15/height
-  1:address:array:character <- new []
-  2:address:array:character <- new []
-  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character, 2:address:array:character
+  1:text <- new []
+  2:text <- new []
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text, 2:text
   assume-console [
     left-click 3, 80
     # create invalid sandbox 2
@@ -208,9 +208,9 @@ 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 100/width, 15/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, 1:address:array:character, 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, 1:text, 2:text
   assume-console [
     press F4  # generate error
   ]
@@ -243,14 +243,14 @@ scenario run-updates-errors-for-shape-shifting-recipes [
   trace-until 100/app  # trace too long
   assume-screen 100/width, 15/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, 1:address:array:character, 2:address:array:character
+  2:text <- new [foo 2]
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text, 2:text
   assume-console [
     press F4
   ]
@@ -291,12 +291,12 @@ scenario run-avoids-spurious-errors-on-reloading-shape-shifting-recipes [
   trace-until 100/app  # trace too long
   assume-screen 100/width, 15/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, 1:address:array:character, 2:address:array:character
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text, 2:text
   # run it once
   assume-console [
     press F4
@@ -350,12 +350,12 @@ to-text x]
 scenario run-shows-missing-type-errors [
   trace-until 100/app  # trace too long
   assume-screen 100/width, 15/height
-  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, 1:address:array:character, 2:address:array:character
+  2:text <- new [foo]
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text, 2:text
   assume-console [
     press F4
   ]
@@ -376,12 +376,12 @@ scenario run-shows-unbalanced-bracket-errors [
   trace-until 100/app  # trace too long
   assume-screen 100/width, 15/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, 1:address:array:character, 2:address:array:character
+  2:text <- new [foo]
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text, 2:text
   assume-console [
     press F4
   ]
@@ -403,14 +403,14 @@ recipe foo \\[
 scenario run-shows-get-on-non-container-errors [
   trace-until 100/app  # trace too long
   assume-screen 100/width, 15/height
-  1:address:array:character <- new [ 
+  1:text <- new [ 
 recipe 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, 1:address:array:character, 2:address:array:character
+  2:text <- new [foo]
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text, 2:text
   assume-console [
     press F4
   ]
@@ -435,15 +435,15 @@ recipe foo [
 scenario run-shows-non-literal-get-argument-errors [
   trace-until 100/app  # trace too long
   assume-screen 100/width, 15/height
-  1:address:array:character <- new [ 
+  1:text <- new [ 
 recipe 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, 1:address:array:character, 2:address:array:character
+  2:text <- new [foo]
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text, 2:text
   assume-console [
     press F4
   ]
@@ -470,13 +470,13 @@ scenario run-shows-errors-everytime [
   trace-until 100/app  # trace too long
   # try to run a file with an error
   assume-screen 100/width, 15/height
-  1:address:array:character <- new [ 
+  1:text <- new [ 
 recipe 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, 1:address:array:character, 2:address:array:character
+  2:text <- new [foo]
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text, 2:text
   assume-console [
     press F4
   ]
@@ -516,10 +516,10 @@ scenario run-instruction-and-print-errors [
   trace-until 100/app  # trace too long
   assume-screen 100/width, 10/height
   # left editor is empty
-  1:address:array:character <- new []
+  1:text <- new []
   # right editor contains an illegal instruction
-  2:address:array:character <- new [get 1234:number, foo:offset]
-  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character, 2:address:array:character
+  2:text <- new [get 1234:number, foo:offset]
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text, 2:text
   # run the code in the editors
   assume-console [
     press F4
@@ -579,10 +579,10 @@ scenario run-instruction-and-print-errors-only-once [
   trace-until 100/app  # trace too long
   assume-screen 100/width, 10/height
   # left editor is empty
-  1:address:array:character <- new []
+  1:text <- new []
   # right editor contains an illegal instruction
-  2:address:array:character <- new [get 1234:number, foo:offset]
-  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character, 2:address:array:character
+  2:text <- new [get 1234:number, foo:offset]
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text, 2:text
   # run the code in the editors multiple times
   assume-console [
     press F4
@@ -610,14 +610,14 @@ scenario sandbox-can-handle-infinite-loop [
   trace-until 100/app  # trace too long
   assume-screen 100/width, 20/height
   # left editor is empty
-  1:address:array:character <- new [recipe foo [
+  1:text <- new [recipe foo [
   {
     loop
   }
 ]]
   # right editor contains an instruction
-  2:address:array:character <- new [foo]
-  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character, 2:address:array:character
+  2:text <- new [foo]
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text, 2:text
   # run the sandbox
   assume-console [
     press F4
@@ -641,7 +641,7 @@ scenario sandbox-with-errors-shows-trace [
   trace-until 100/app  # trace too long
   assume-screen 100/width, 10/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
@@ -649,8 +649,8 @@ stash [dividing by], b
 _, c:number <- divide-with-remainder a, b
 reply b
 ]]
-  2:address:array:character <- new [foo 4, 0]
-  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:address:array:character, 2:address:array:character
+  2:text <- new [foo 4, 0]
+  3:address:programming-environment-data <- new-programming-environment screen:address:screen, 1:text, 2:text
   # run
   assume-console [
     press F4
diff --git a/edit/012-editor-undo.mu b/edit/012-editor-undo.mu
index 75872cf0..a245e77d 100644
--- a/edit/012-editor-undo.mu
+++ b/edit/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 [
@@ -766,10 +766,10 @@ scenario editor-can-undo-scroll [
   # screen has 1 line for menu + 3 lines
   assume-screen 5/width, 4/height
   # editor contains a wrapped line
-  1:address:array:character <- new [a
+  1:text <- new [a
 b
 cdefgh]
-  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
   # position cursor at end of screen and try to move right
   assume-console [
     left-click 3, 3
@@ -828,10 +828,10 @@ cdefgh]
 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 [
@@ -872,10 +872,10 @@ 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 [
@@ -922,10 +922,10 @@ 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 [
@@ -966,13 +966,13 @@ ghi]
 scenario editor-can-undo-ctrl-f [
   # create an editor with multiple pages of text
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [a
+  1:text <- new [a
 b
 c
 d
 e
 f]
-  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
   # scroll the page
   assume-console [
@@ -1001,13 +1001,13 @@ f]
 scenario editor-can-undo-page-down [
   # create an editor with multiple pages of text
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [a
+  1:text <- new [a
 b
 c
 d
 e
 f]
-  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
   # scroll the page
   assume-console [
@@ -1036,13 +1036,13 @@ f]
 scenario editor-can-undo-ctrl-b [
   # create an editor with multiple pages of text
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [a
+  1:text <- new [a
 b
 c
 d
 e
 f]
-  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
   # scroll the page down and up
   assume-console [
@@ -1072,13 +1072,13 @@ f]
 scenario editor-can-undo-page-up [
   # create an editor with multiple pages of text
   assume-screen 10/width, 5/height
-  1:address:array:character <- new [a
+  1:text <- new [a
 b
 c
 d
 e
 f]
-  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
   # scroll the page down and up
   assume-console [
@@ -1108,10 +1108,10 @@ f]
 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 [
@@ -1152,10 +1152,10 @@ 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 [
@@ -1196,10 +1196,10 @@ 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 [
@@ -1240,10 +1240,10 @@ 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 [
@@ -1284,10 +1284,10 @@ 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 [
@@ -1338,10 +1338,10 @@ 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
@@ -1395,8 +1395,8 @@ 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]
@@ -1544,8 +1544,8 @@ 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 [
@@ -1689,8 +1689,8 @@ 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 [
@@ -1878,9 +1878,9 @@ 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 [
@@ -1980,9 +1980,9 @@ 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 [
@@ -2081,8 +2081,8 @@ 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 [