From 1d4f34d772dc9839b5573f5e5efe713441ae60f3 Mon Sep 17 00:00:00 2001
From: Danny Yoo <dyoo@cs.wpi.edu>
Date: Fri, 9 Sep 2011 19:30:55 -0400
Subject: [PATCH] incorporating emmnauel's change to cage teachpack

---
 war/js/mzscheme-vm/collections.js | 405 +++++++++++++++++-------------
 1 file changed, 225 insertions(+), 180 deletions(-)

diff --git a/war/js/mzscheme-vm/collections.js b/war/js/mzscheme-vm/collections.js
index a7af2a85..6d92944a 100644
--- a/war/js/mzscheme-vm/collections.js
+++ b/war/js/mzscheme-vm/collections.js
@@ -17849,6 +17849,7 @@ COLLECTIONS["bootstrap2011/bootstrap-teachpack"] = { 'name': "bootstrap2011/boot
 }, 'provides': ["sine","subset?","tangent","type","sq","string->image","cosine","make-game","pick","play","put-image","number->image","overlay-at","in?","*player-y*","*score*","*player-x*"]};
 COLLECTIONS["bootstrap2011/cage-teachpack"] = { 'name': "bootstrap2011/cage-teachpack", 'bytecode': {"$":"compilation-top" ,"max-let-depth":0 ,"prefix":{"$":"prefix" ,"num-lifts":0 ,"toplevels":[false ,{"$":"global-bucket" ,"value":"b"
 } ,{"$":"global-bucket" ,"value":"onscreen?"
+} ,{"$":"global-bucket" ,"value":"onscreen?*"
 } ,{"$":"global-bucket" ,"value":"w"
 } ,{"$":"global-bucket" ,"value":"draw-butterfly"
 } ,{"$":"global-bucket" ,"value":"sq"
@@ -17912,10 +17913,10 @@ COLLECTIONS["bootstrap2011/cage-teachpack"] = { 'name': "bootstrap2011/cage-teac
 } ,{"$":"module-variable" ,"sym":types.symbol("not") ,"modidx":{"$":"module-path" ,"path":"moby/toplevel" ,"base":{"$":"module-path" ,"path":false ,"base":false
 }
 } ,"pos":-1 ,"phase":0
-} ,{"$":"module-variable" ,"sym":types.symbol("pi") ,"modidx":{"$":"module-path" ,"path":"moby/toplevel" ,"base":{"$":"module-path" ,"path":false ,"base":false
+} ,{"$":"module-variable" ,"sym":types.symbol("overlay/xy") ,"modidx":{"$":"module-path" ,"path":"moby/world" ,"base":{"$":"module-path" ,"path":false ,"base":false
 }
 } ,"pos":-1 ,"phase":0
-} ,{"$":"module-variable" ,"sym":types.symbol("posn?") ,"modidx":{"$":"module-path" ,"path":"moby/toplevel" ,"base":{"$":"module-path" ,"path":false ,"base":false
+} ,{"$":"module-variable" ,"sym":types.symbol("procedure-arity") ,"modidx":{"$":"module-path" ,"path":"moby/toplevel" ,"base":{"$":"module-path" ,"path":false ,"base":false
 }
 } ,"pos":-1 ,"phase":0
 } ,{"$":"module-variable" ,"sym":types.symbol("procedure?") ,"modidx":{"$":"module-path" ,"path":"moby/toplevel" ,"base":{"$":"module-path" ,"path":false ,"base":false
@@ -17924,10 +17925,13 @@ COLLECTIONS["bootstrap2011/cage-teachpack"] = { 'name': "bootstrap2011/cage-teac
 } ,{"$":"module-variable" ,"sym":types.symbol("place-image") ,"modidx":{"$":"module-path" ,"path":"moby/world" ,"base":{"$":"module-path" ,"path":false ,"base":false
 }
 } ,"pos":-1 ,"phase":0
-} ,{"$":"module-variable" ,"sym":types.symbol("on-redraw") ,"modidx":{"$":"module-path" ,"path":"moby/world-handlers" ,"base":{"$":"module-path" ,"path":false ,"base":false
+} ,{"$":"module-variable" ,"sym":types.symbol("posn?") ,"modidx":{"$":"module-path" ,"path":"moby/toplevel" ,"base":{"$":"module-path" ,"path":false ,"base":false
 }
 } ,"pos":-1 ,"phase":0
-} ,{"$":"module-variable" ,"sym":types.symbol("overlay/xy") ,"modidx":{"$":"module-path" ,"path":"moby/world" ,"base":{"$":"module-path" ,"path":false ,"base":false
+} ,{"$":"module-variable" ,"sym":types.symbol("pi") ,"modidx":{"$":"module-path" ,"path":"moby/toplevel" ,"base":{"$":"module-path" ,"path":false ,"base":false
+}
+} ,"pos":-1 ,"phase":0
+} ,{"$":"module-variable" ,"sym":types.symbol("on-redraw") ,"modidx":{"$":"module-path" ,"path":"moby/world-handlers" ,"base":{"$":"module-path" ,"path":false ,"base":false
 }
 } ,"pos":-1 ,"phase":0
 } ,{"$":"module-variable" ,"sym":types.symbol("on-key") ,"modidx":{"$":"module-path" ,"path":"moby/world-handlers" ,"base":{"$":"module-path" ,"path":false ,"base":false
@@ -17957,9 +17961,6 @@ COLLECTIONS["bootstrap2011/cage-teachpack"] = { 'name': "bootstrap2011/cage-teac
 } ,{"$":"module-variable" ,"sym":types.symbol("length") ,"modidx":{"$":"module-path" ,"path":"moby/toplevel" ,"base":{"$":"module-path" ,"path":false ,"base":false
 }
 } ,"pos":-1 ,"phase":0
-} ,{"$":"module-variable" ,"sym":types.symbol("big-bang") ,"modidx":{"$":"module-path" ,"path":"moby/jsworld" ,"base":{"$":"module-path" ,"path":false ,"base":false
-}
-} ,"pos":-1 ,"phase":0
 } ,{"$":"module-variable" ,"sym":types.symbol("image-width") ,"modidx":{"$":"module-path" ,"path":"moby/world" ,"base":{"$":"module-path" ,"path":false ,"base":false
 }
 } ,"pos":-1 ,"phase":0
@@ -17972,6 +17973,12 @@ COLLECTIONS["bootstrap2011/cage-teachpack"] = { 'name': "bootstrap2011/cage-teac
 } ,{"$":"module-variable" ,"sym":types.symbol("empty-scene") ,"modidx":{"$":"module-path" ,"path":"moby/world" ,"base":{"$":"module-path" ,"path":false ,"base":false
 }
 } ,"pos":-1 ,"phase":0
+} ,{"$":"module-variable" ,"sym":types.symbol("=") ,"modidx":{"$":"module-path" ,"path":"moby/toplevel" ,"base":{"$":"module-path" ,"path":false ,"base":false
+}
+} ,"pos":-1 ,"phase":0
+} ,{"$":"module-variable" ,"sym":types.symbol("big-bang") ,"modidx":{"$":"module-path" ,"path":"moby/jsworld" ,"base":{"$":"module-path" ,"path":false ,"base":false
+}
+} ,"pos":-1 ,"phase":0
 } ,{"$":"module-variable" ,"sym":types.symbol("boolean?") ,"modidx":{"$":"module-path" ,"path":"moby/toplevel" ,"base":{"$":"module-path" ,"path":false ,"base":false
 }
 } ,"pos":-1 ,"phase":0
@@ -18000,33 +18007,33 @@ COLLECTIONS["bootstrap2011/cage-teachpack"] = { 'name': "bootstrap2011/cage-teac
 ] ,"stxs":[
 ]
 } ,"compiled-indirects":[
-] ,"code":{"$":"seq" ,"forms":[{"$":"def-values" ,"ids":[{"$":"toplevel" ,"depth":0 ,"pos":28 ,"const?":false ,"ready?":false
+] ,"code":{"$":"seq" ,"forms":[{"$":"def-values" ,"ids":[{"$":"toplevel" ,"depth":0 ,"pos":29 ,"const?":false ,"ready?":false
 }
 ] ,"body":{"$":"constant" ,"value":640
 }
-} ,{"$":"def-values" ,"ids":[{"$":"toplevel" ,"depth":0 ,"pos":29 ,"const?":false ,"ready?":false
+} ,{"$":"def-values" ,"ids":[{"$":"toplevel" ,"depth":0 ,"pos":30 ,"const?":false ,"ready?":false
 }
 ] ,"body":{"$":"constant" ,"value":480
 }
-} ,{"$":"def-values" ,"ids":[{"$":"toplevel" ,"depth":0 ,"pos":23 ,"const?":false ,"ready?":false
+} ,{"$":"def-values" ,"ids":[{"$":"toplevel" ,"depth":0 ,"pos":24 ,"const?":false ,"ready?":false
 }
 ] ,"body":{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
 } ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",358,17,18,74])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":1 ,"pos":64 ,"const?":false ,"ready?":false
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":1 ,"pos":67 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"constant" ,"value":"http://www.wescheme.org/images/teachpacks2011/butterfly.png"
 }
 ]
 }
 }
-} ,{"$":"def-values" ,"ids":[{"$":"toplevel" ,"depth":0 ,"pos":12 ,"const?":false ,"ready?":false
-} ,{"$":"toplevel" ,"depth":0 ,"pos":25 ,"const?":false ,"ready?":false
-} ,{"$":"toplevel" ,"depth":0 ,"pos":8 ,"const?":false ,"ready?":false
-} ,{"$":"toplevel" ,"depth":0 ,"pos":6 ,"const?":false ,"ready?":false
-} ,{"$":"toplevel" ,"depth":0 ,"pos":10 ,"const?":false ,"ready?":false
+} ,{"$":"def-values" ,"ids":[{"$":"toplevel" ,"depth":0 ,"pos":13 ,"const?":false ,"ready?":false
+} ,{"$":"toplevel" ,"depth":0 ,"pos":26 ,"const?":false ,"ready?":false
+} ,{"$":"toplevel" ,"depth":0 ,"pos":9 ,"const?":false ,"ready?":false
+} ,{"$":"toplevel" ,"depth":0 ,"pos":7 ,"const?":false ,"ready?":false
+} ,{"$":"toplevel" ,"depth":0 ,"pos":11 ,"const?":false ,"ready?":false
 }
 ] ,"body":{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
 } ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",510,21,0,27])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":4 ,"pos":53 ,"const?":false ,"ready?":false
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":4 ,"pos":55 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"constant" ,"value":types.symbol("world")
 } ,{"$":"constant" ,"value":false
 } ,{"$":"constant" ,"value":2
@@ -18035,31 +18042,31 @@ COLLECTIONS["bootstrap2011/cage-teachpack"] = { 'name': "bootstrap2011/cage-teac
 ]
 }
 }
-} ,{"$":"def-values" ,"ids":[{"$":"toplevel" ,"depth":0 ,"pos":7 ,"const?":false ,"ready?":false
+} ,{"$":"def-values" ,"ids":[{"$":"toplevel" ,"depth":0 ,"pos":8 ,"const?":false ,"ready?":false
 }
 ] ,"body":{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
 } ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",510,21,0,27])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":3 ,"pos":51 ,"const?":false ,"ready?":false
-} ,"rands":[{"$":"toplevel" ,"depth":3 ,"pos":6 ,"const?":false ,"ready?":false
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":3 ,"pos":53 ,"const?":false ,"ready?":false
+} ,"rands":[{"$":"toplevel" ,"depth":3 ,"pos":7 ,"const?":false ,"ready?":false
 } ,{"$":"constant" ,"value":0
 } ,{"$":"constant" ,"value":types.symbol("x")
 }
 ]
 }
 }
-} ,{"$":"def-values" ,"ids":[{"$":"toplevel" ,"depth":0 ,"pos":9 ,"const?":false ,"ready?":false
+} ,{"$":"def-values" ,"ids":[{"$":"toplevel" ,"depth":0 ,"pos":10 ,"const?":false ,"ready?":false
 }
 ] ,"body":{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
 } ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",510,21,0,27])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":3 ,"pos":51 ,"const?":false ,"ready?":false
-} ,"rands":[{"$":"toplevel" ,"depth":3 ,"pos":6 ,"const?":false ,"ready?":false
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":3 ,"pos":53 ,"const?":false ,"ready?":false
+} ,"rands":[{"$":"toplevel" ,"depth":3 ,"pos":7 ,"const?":false ,"ready?":false
 } ,{"$":"constant" ,"value":1
 } ,{"$":"constant" ,"value":types.symbol("y")
 }
 ]
 }
 }
-} ,{"$":"def-values" ,"ids":[{"$":"toplevel" ,"depth":0 ,"pos":17 ,"const?":false ,"ready?":false
+} ,{"$":"def-values" ,"ids":[{"$":"toplevel" ,"depth":0 ,"pos":18 ,"const?":false ,"ready?":false
 }
 ] ,"body":{"$":"lam" ,"name":types.symbol("move") ,"flags":[
 ] ,"num-params":2 ,"param-types":[types.symbol("val") ,types.symbol("val")
@@ -18067,10 +18074,10 @@ COLLECTIONS["bootstrap2011/cage-teachpack"] = { 'name': "bootstrap2011/cage-teac
 ] ,"closure-types":[types.symbol("val/ref")
 ] ,"max-let-depth":0 ,"body":{"$":"branch" ,"test":{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
 } ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",631,27,5,19])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":1 ,"pos":41 ,"const?":false ,"ready?":false
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":1 ,"pos":42 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
 } ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",636,27,10,13])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":2 ,"pos":37 ,"const?":false ,"ready?":false
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":2 ,"pos":38 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"localref" ,"unbox?":false ,"pos":4 ,"clear":false ,"other-clears?":false ,"flonum?":false
 }
 ]
@@ -18081,7 +18088,7 @@ COLLECTIONS["bootstrap2011/cage-teachpack"] = { 'name': "bootstrap2011/cage-teac
 } ,"then":{"$":"localref" ,"unbox?":false ,"pos":1 ,"clear":false ,"other-clears?":false ,"flonum?":false
 } ,"else":{"$":"branch" ,"test":{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
 } ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",659,28,5,21])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":2 ,"pos":33 ,"const?":false ,"ready?":false
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":2 ,"pos":34 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"localref" ,"unbox?":false ,"pos":4 ,"clear":false ,"other-clears?":false ,"flonum?":false
 } ,{"$":"constant" ,"value":"left"
 }
@@ -18089,13 +18096,13 @@ COLLECTIONS["bootstrap2011/cage-teachpack"] = { 'name': "bootstrap2011/cage-teac
 }
 } ,"then":{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
 } ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",687,29,5,43])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":2 ,"pos":25 ,"const?":false ,"ready?":false
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":2 ,"pos":26 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
 } ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",699,29,17,18])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":4 ,"pos":66 ,"const?":false ,"ready?":false
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":4 ,"pos":69 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
 } ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",702,29,20,11])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":5 ,"pos":7 ,"const?":false ,"ready?":false
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":5 ,"pos":8 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"localref" ,"unbox?":false ,"pos":6 ,"clear":false ,"other-clears?":false ,"flonum?":false
 }
 ]
@@ -18106,7 +18113,7 @@ COLLECTIONS["bootstrap2011/cage-teachpack"] = { 'name': "bootstrap2011/cage-teac
 }
 } ,{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
 } ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",718,29,36,11])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":3 ,"pos":9 ,"const?":false ,"ready?":false
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":3 ,"pos":10 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"localref" ,"unbox?":false ,"pos":4 ,"clear":false ,"other-clears?":false ,"flonum?":false
 }
 ]
@@ -18116,7 +18123,7 @@ COLLECTIONS["bootstrap2011/cage-teachpack"] = { 'name': "bootstrap2011/cage-teac
 }
 } ,"else":{"$":"branch" ,"test":{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
 } ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",737,30,5,22])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":2 ,"pos":33 ,"const?":false ,"ready?":false
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":2 ,"pos":34 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"localref" ,"unbox?":false ,"pos":4 ,"clear":false ,"other-clears?":false ,"flonum?":false
 } ,{"$":"constant" ,"value":"right"
 }
@@ -18124,13 +18131,13 @@ COLLECTIONS["bootstrap2011/cage-teachpack"] = { 'name': "bootstrap2011/cage-teac
 }
 } ,"then":{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
 } ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",766,31,5,43])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":2 ,"pos":25 ,"const?":false ,"ready?":false
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":2 ,"pos":26 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
 } ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",778,31,17,18])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":4 ,"pos":68 ,"const?":false ,"ready?":false
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":4 ,"pos":71 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
 } ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",781,31,20,11])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":5 ,"pos":7 ,"const?":false ,"ready?":false
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":5 ,"pos":8 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"localref" ,"unbox?":false ,"pos":6 ,"clear":false ,"other-clears?":false ,"flonum?":false
 }
 ]
@@ -18141,7 +18148,7 @@ COLLECTIONS["bootstrap2011/cage-teachpack"] = { 'name': "bootstrap2011/cage-teac
 }
 } ,{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
 } ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",797,31,36,11])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":3 ,"pos":9 ,"const?":false ,"ready?":false
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":3 ,"pos":10 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"localref" ,"unbox?":false ,"pos":4 ,"clear":false ,"other-clears?":false ,"flonum?":false
 }
 ]
@@ -18151,7 +18158,7 @@ COLLECTIONS["bootstrap2011/cage-teachpack"] = { 'name': "bootstrap2011/cage-teac
 }
 } ,"else":{"$":"branch" ,"test":{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
 } ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",816,32,5,21])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":2 ,"pos":33 ,"const?":false ,"ready?":false
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":2 ,"pos":34 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"localref" ,"unbox?":false ,"pos":4 ,"clear":false ,"other-clears?":false ,"flonum?":false
 } ,{"$":"constant" ,"value":"down"
 }
@@ -18159,20 +18166,20 @@ COLLECTIONS["bootstrap2011/cage-teachpack"] = { 'name': "bootstrap2011/cage-teac
 }
 } ,"then":{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
 } ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",844,33,5,43])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":2 ,"pos":25 ,"const?":false ,"ready?":false
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":2 ,"pos":26 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
 } ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",856,33,17,11])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":3 ,"pos":7 ,"const?":false ,"ready?":false
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":3 ,"pos":8 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"localref" ,"unbox?":false ,"pos":4 ,"clear":false ,"other-clears?":false ,"flonum?":false
 }
 ]
 }
 } ,{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
 } ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",868,33,29,18])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":4 ,"pos":66 ,"const?":false ,"ready?":false
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":4 ,"pos":69 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
 } ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",871,33,32,11])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":5 ,"pos":9 ,"const?":false ,"ready?":false
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":5 ,"pos":10 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"localref" ,"unbox?":false ,"pos":6 ,"clear":false ,"other-clears?":false ,"flonum?":false
 }
 ]
@@ -18186,7 +18193,7 @@ COLLECTIONS["bootstrap2011/cage-teachpack"] = { 'name': "bootstrap2011/cage-teac
 }
 } ,"else":{"$":"branch" ,"test":{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
 } ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",894,34,5,19])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":2 ,"pos":33 ,"const?":false ,"ready?":false
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":2 ,"pos":34 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"localref" ,"unbox?":false ,"pos":4 ,"clear":false ,"other-clears?":false ,"flonum?":false
 } ,{"$":"constant" ,"value":"up"
 }
@@ -18194,20 +18201,20 @@ COLLECTIONS["bootstrap2011/cage-teachpack"] = { 'name': "bootstrap2011/cage-teac
 }
 } ,"then":{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
 } ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",920,35,5,43])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":2 ,"pos":25 ,"const?":false ,"ready?":false
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":2 ,"pos":26 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
 } ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",932,35,17,11])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":3 ,"pos":7 ,"const?":false ,"ready?":false
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":3 ,"pos":8 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"localref" ,"unbox?":false ,"pos":4 ,"clear":false ,"other-clears?":false ,"flonum?":false
 }
 ]
 }
 } ,{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
 } ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",944,35,29,18])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":4 ,"pos":68 ,"const?":false ,"ready?":false
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":4 ,"pos":71 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
 } ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",947,35,32,11])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":5 ,"pos":9 ,"const?":false ,"ready?":false
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":5 ,"pos":10 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"localref" ,"unbox?":false ,"pos":6 ,"clear":false ,"other-clears?":false ,"flonum?":false
 }
 ]
@@ -18219,11 +18226,11 @@ COLLECTIONS["bootstrap2011/cage-teachpack"] = { 'name': "bootstrap2011/cage-teac
 }
 ]
 }
-} ,"else":{"$":"branch" ,"test":{"$":"toplevel" ,"depth":0 ,"pos":32 ,"const?":false ,"ready?":false
+} ,"else":{"$":"branch" ,"test":{"$":"toplevel" ,"depth":0 ,"pos":33 ,"const?":false ,"ready?":false
 } ,"then":{"$":"localref" ,"unbox?":false ,"pos":1 ,"clear":false ,"other-clears?":false ,"flonum?":false
 } ,"else":{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
 } ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",620,26,2,358])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":1 ,"pos":31 ,"const?":false ,"ready?":false
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":1 ,"pos":32 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"constant" ,"value":types.list([types.symbol("make-Loc"),620,26,2,358,"bootstrap2011/cage-teachpack"])
 }
 ]
@@ -18236,7 +18243,7 @@ COLLECTIONS["bootstrap2011/cage-teachpack"] = { 'name': "bootstrap2011/cage-teac
 }
 }
 }
-} ,{"$":"def-values" ,"ids":[{"$":"toplevel" ,"depth":0 ,"pos":24 ,"const?":false ,"ready?":false
+} ,{"$":"def-values" ,"ids":[{"$":"toplevel" ,"depth":0 ,"pos":25 ,"const?":false ,"ready?":false
 }
 ] ,"body":{"$":"lam" ,"name":types.symbol("draw-world") ,"flags":[
 ] ,"num-params":1 ,"param-types":[types.symbol("val")
@@ -18264,9 +18271,9 @@ COLLECTIONS["bootstrap2011/cage-teachpack"] = { 'name': "bootstrap2011/cage-teac
 } ,"rands":[{"$":"localref" ,"unbox?":false ,"pos":5 ,"clear":false ,"other-clears?":false ,"flonum?":false
 } ,{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
 } ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",1830,62,33,26])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":6 ,"pos":61 ,"const?":false ,"ready?":false
-} ,"rands":[{"$":"toplevel" ,"depth":6 ,"pos":28 ,"const?":false ,"ready?":false
-} ,{"$":"toplevel" ,"depth":6 ,"pos":29 ,"const?":false ,"ready?":false
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":6 ,"pos":62 ,"const?":false ,"ready?":false
+} ,"rands":[{"$":"toplevel" ,"depth":6 ,"pos":29 ,"const?":false ,"ready?":false
+} ,{"$":"toplevel" ,"depth":6 ,"pos":30 ,"const?":false ,"ready?":false
 }
 ]
 }
@@ -18283,20 +18290,20 @@ COLLECTIONS["bootstrap2011/cage-teachpack"] = { 'name': "bootstrap2011/cage-teac
 ] ,"closure-types":[types.symbol("val/ref")
 ] ,"max-let-depth":0 ,"body":{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
 } ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",1433,51,12,337])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":4 ,"pos":45 ,"const?":false ,"ready?":false
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":4 ,"pos":46 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
 } ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",1459,52,13,244])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":7 ,"pos":35 ,"const?":false ,"ready?":false
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":7 ,"pos":36 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
 } ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",1480,53,14,198])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":11 ,"pos":38 ,"const?":false ,"ready?":false
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":11 ,"pos":39 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"constant" ,"value":"x-coordinate: "
 } ,{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
 } ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",1542,54,29,28])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":12 ,"pos":49 ,"const?":false ,"ready?":false
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":12 ,"pos":51 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
 } ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",1558,54,45,11])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":13 ,"pos":7 ,"const?":false ,"ready?":false
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":13 ,"pos":8 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"localref" ,"unbox?":false ,"pos":14 ,"clear":false ,"other-clears?":false ,"flonum?":false
 }
 ]
@@ -18307,10 +18314,10 @@ COLLECTIONS["bootstrap2011/cage-teachpack"] = { 'name': "bootstrap2011/cage-teac
 } ,{"$":"constant" ,"value":"   y-coordinate: "
 } ,{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
 } ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",1649,56,29,28])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":12 ,"pos":49 ,"const?":false ,"ready?":false
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":12 ,"pos":51 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
 } ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",1665,56,45,11])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":13 ,"pos":9 ,"const?":false ,"ready?":false
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":13 ,"pos":10 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"localref" ,"unbox?":false ,"pos":14 ,"clear":false ,"other-clears?":false ,"flonum?":false
 }
 ]
@@ -18328,10 +18335,10 @@ COLLECTIONS["bootstrap2011/cage-teachpack"] = { 'name': "bootstrap2011/cage-teac
 }
 } ,{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
 } ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",1710,58,13,32])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":6 ,"pos":30 ,"const?":false ,"ready?":false
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":6 ,"pos":31 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
 } ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",1720,58,23,19])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":7 ,"pos":58 ,"const?":false ,"ready?":false
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":7 ,"pos":59 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"localref" ,"unbox?":false ,"pos":9 ,"clear":false ,"other-clears?":false ,"flonum?":false
 }
 ]
@@ -18356,22 +18363,22 @@ COLLECTIONS["bootstrap2011/cage-teachpack"] = { 'name': "bootstrap2011/cage-teac
 ] ,"closure-types":[types.symbol("val/ref")
 ] ,"max-let-depth":0 ,"body":{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
 } ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",1228,45,12,141])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":4 ,"pos":45 ,"const?":false ,"ready?":false
-} ,"rands":[{"$":"toplevel" ,"depth":4 ,"pos":23 ,"const?":false ,"ready?":false
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":4 ,"pos":46 ,"const?":false ,"ready?":false
+} ,"rands":[{"$":"toplevel" ,"depth":4 ,"pos":24 ,"const?":false ,"ready?":false
 } ,{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
 } ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",1277,46,25,11])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":5 ,"pos":7 ,"const?":false ,"ready?":false
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":5 ,"pos":8 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"localref" ,"unbox?":false ,"pos":6 ,"clear":false ,"other-clears?":false ,"flonum?":false
 }
 ]
 }
 } ,{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
 } ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",1315,47,25,22])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":6 ,"pos":66 ,"const?":false ,"ready?":false
-} ,"rands":[{"$":"toplevel" ,"depth":6 ,"pos":29 ,"const?":false ,"ready?":false
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":6 ,"pos":69 ,"const?":false ,"ready?":false
+} ,"rands":[{"$":"toplevel" ,"depth":6 ,"pos":30 ,"const?":false ,"ready?":false
 } ,{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
 } ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",1325,47,35,11])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":7 ,"pos":9 ,"const?":false ,"ready?":false
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":7 ,"pos":10 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"localref" ,"unbox?":false ,"pos":8 ,"clear":false ,"other-clears?":false ,"flonum?":false
 }
 ]
@@ -18389,36 +18396,42 @@ COLLECTIONS["bootstrap2011/cage-teachpack"] = { 'name': "bootstrap2011/cage-teac
 }
 }
 }
-} ,{"$":"def-values" ,"ids":[{"$":"toplevel" ,"depth":0 ,"pos":16 ,"const?":false ,"ready?":false
+} ,{"$":"def-values" ,"ids":[{"$":"toplevel" ,"depth":0 ,"pos":17 ,"const?":false ,"ready?":false
 }
 ] ,"body":{"$":"lam" ,"name":types.symbol("start") ,"flags":[
 ] ,"num-params":1 ,"param-types":[types.symbol("val")
 ] ,"rest?":false ,"closure-map":[0
 ] ,"closure-types":[types.symbol("val/ref")
 ] ,"max-let-depth":0 ,"body":{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
-} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",1898,66,9,197])
+} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",1898,66,9,139])
 } ,"body":{"$":"application" ,"rator":{"$":"lam" ,"name":types.EMPTY ,"flags":[
 ] ,"num-params":1 ,"param-types":[types.symbol("val")
 ] ,"rest?":false ,"closure-map":[1
 ] ,"closure-types":[types.symbol("val/ref")
 ] ,"max-let-depth":0 ,"body":{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
-} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",2101,71,4,115])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":3 ,"pos":57 ,"const?":false ,"ready?":false
+} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",2047,69,9,199])
+} ,"body":{"$":"application" ,"rator":{"$":"lam" ,"name":types.EMPTY ,"flags":[
+] ,"num-params":1 ,"param-types":[types.symbol("val")
+] ,"rest?":false ,"closure-map":[1
+] ,"closure-types":[types.symbol("val/ref")
+] ,"max-let-depth":0 ,"body":{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
+} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",2252,74,4,115])
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":3 ,"pos":64 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
-} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",2111,71,14,37])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":5 ,"pos":25 ,"const?":false ,"ready?":false
+} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",2262,74,14,37])
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":5 ,"pos":26 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
-} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",2123,71,26,11])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":7 ,"pos":67 ,"const?":false ,"ready?":false
-} ,"rands":[{"$":"toplevel" ,"depth":7 ,"pos":28 ,"const?":false ,"ready?":false
+} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",2274,74,26,11])
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":7 ,"pos":70 ,"const?":false ,"ready?":false
+} ,"rands":[{"$":"toplevel" ,"depth":7 ,"pos":29 ,"const?":false ,"ready?":false
 } ,{"$":"constant" ,"value":2
 }
 ]
 }
 } ,{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
-} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",2135,71,38,12])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":7 ,"pos":67 ,"const?":false ,"ready?":false
-} ,"rands":[{"$":"toplevel" ,"depth":7 ,"pos":29 ,"const?":false ,"ready?":false
+} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",2286,74,38,12])
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":7 ,"pos":70 ,"const?":false ,"ready?":false
+} ,"rands":[{"$":"toplevel" ,"depth":7 ,"pos":30 ,"const?":false ,"ready?":false
 } ,{"$":"constant" ,"value":2
 }
 ]
@@ -18427,15 +18440,15 @@ COLLECTIONS["bootstrap2011/cage-teachpack"] = { 'name': "bootstrap2011/cage-teac
 ]
 }
 } ,{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
-} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",2163,72,14,22])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":4 ,"pos":46 ,"const?":false ,"ready?":false
-} ,"rands":[{"$":"toplevel" ,"depth":4 ,"pos":24 ,"const?":false ,"ready?":false
+} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",2314,75,14,22])
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":4 ,"pos":49 ,"const?":false ,"ready?":false
+} ,"rands":[{"$":"toplevel" ,"depth":4 ,"pos":25 ,"const?":false ,"ready?":false
 }
 ]
 }
 } ,{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
-} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",2200,73,14,15])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":4 ,"pos":48 ,"const?":false ,"ready?":false
+} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",2351,76,14,15])
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":4 ,"pos":50 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"localref" ,"unbox?":false ,"pos":5 ,"clear":false ,"other-clears?":false ,"flonum?":false
 }
 ]
@@ -18449,14 +18462,14 @@ COLLECTIONS["bootstrap2011/cage-teachpack"] = { 'name': "bootstrap2011/cage-teac
 ] ,"rest?":false ,"closure-map":[1 ,2
 ] ,"closure-types":[types.symbol("val/ref") ,types.symbol("val/ref")
 ] ,"max-let-depth":0 ,"body":{"$":"branch" ,"test":{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
-} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",1944,67,23,88])
+} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",2093,70,23,90])
 } ,"body":{"$":"application" ,"rator":{"$":"localref" ,"unbox?":false ,"pos":3 ,"clear":false ,"other-clears?":false ,"flonum?":false
 } ,"rands":[{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
-} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",1955,67,34,20])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":3 ,"pos":7 ,"const?":false ,"ready?":false
+} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",2105,70,35,20])
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":3 ,"pos":8 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
-} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",1964,67,43,10])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":5 ,"pos":17 ,"const?":false ,"ready?":false
+} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",2114,70,44,10])
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":5 ,"pos":18 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"localref" ,"unbox?":false ,"pos":7 ,"clear":false ,"other-clears?":false ,"flonum?":false
 } ,{"$":"localref" ,"unbox?":false ,"pos":8 ,"clear":false ,"other-clears?":false ,"flonum?":false
 }
@@ -18466,11 +18479,11 @@ COLLECTIONS["bootstrap2011/cage-teachpack"] = { 'name': "bootstrap2011/cage-teac
 ]
 }
 } ,{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
-} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",2011,68,34,20])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":3 ,"pos":9 ,"const?":false ,"ready?":false
+} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",2162,71,35,20])
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":3 ,"pos":10 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
-} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",2020,68,43,10])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":5 ,"pos":17 ,"const?":false ,"ready?":false
+} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",2171,71,44,10])
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":5 ,"pos":18 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"localref" ,"unbox?":false ,"pos":7 ,"clear":false ,"other-clears?":false ,"flonum?":false
 } ,{"$":"localref" ,"unbox?":false ,"pos":8 ,"clear":false ,"other-clears?":false ,"flonum?":false
 }
@@ -18483,8 +18496,8 @@ COLLECTIONS["bootstrap2011/cage-teachpack"] = { 'name': "bootstrap2011/cage-teac
 ]
 }
 } ,"then":{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
-} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",2057,69,23,10])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":2 ,"pos":17 ,"const?":false ,"ready?":false
+} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",2208,72,23,10])
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":2 ,"pos":18 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"localref" ,"unbox?":false ,"pos":4 ,"clear":false ,"other-clears?":false ,"flonum?":false
 } ,{"$":"localref" ,"unbox?":false ,"pos":5 ,"clear":false ,"other-clears?":false ,"flonum?":false
 }
@@ -18497,75 +18510,107 @@ COLLECTIONS["bootstrap2011/cage-teachpack"] = { 'name': "bootstrap2011/cage-teac
 ]
 }
 }
+} ,"rands":[{"$":"branch" ,"test":{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
+} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",1914,66,25,33])
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":3 ,"pos":63 ,"const?":false ,"ready?":false
+} ,"rands":[{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
+} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",1917,66,28,27])
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":4 ,"pos":44 ,"const?":false ,"ready?":false
+} ,"rands":[{"$":"localref" ,"unbox?":false ,"pos":5 ,"clear":false ,"other-clears?":false ,"flonum?":false
 }
-} ,{"$":"def-values" ,"ids":[{"$":"toplevel" ,"depth":0 ,"pos":11 ,"const?":false ,"ready?":false
+]
+}
+} ,{"$":"constant" ,"value":2
+}
+]
+}
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 }
 }
 }
-} ,{"$":"def-values" ,"ids":[{"$":"toplevel" ,"depth":0 ,"pos":13 ,"const?":false ,"ready?":false
+} ,{"$":"def-values" ,"ids":[{"$":"toplevel" ,"depth":0 ,"pos":14 ,"const?":false ,"ready?":false
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 }
 }
-} ,{"$":"def-values" ,"ids":[{"$":"toplevel" ,"depth":0 ,"pos":22 ,"const?":false ,"ready?":false
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 } ,"rands":[{"$":"localref" ,"unbox?":false ,"pos":3 ,"clear":false ,"other-clears?":false ,"flonum?":false
 }
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@@ -18617,20 +18662,20 @@ COLLECTIONS["bootstrap2011/cage-teachpack"] = { 'name': "bootstrap2011/cage-teac
 }
 }
 }
-} ,{"$":"def-values" ,"ids":[{"$":"toplevel" ,"depth":0 ,"pos":18 ,"const?":false ,"ready?":false
+} ,{"$":"def-values" ,"ids":[{"$":"toplevel" ,"depth":0 ,"pos":19 ,"const?":false ,"ready?":false
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@@ -18642,23 +18687,23 @@ COLLECTIONS["bootstrap2011/cage-teachpack"] = { 'name': "bootstrap2011/cage-teac
 }
 }
 }
-} ,{"$":"def-values" ,"ids":[{"$":"toplevel" ,"depth":0 ,"pos":19 ,"const?":false ,"ready?":false
+} ,{"$":"def-values" ,"ids":[{"$":"toplevel" ,"depth":0 ,"pos":20 ,"const?":false ,"ready?":false
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+} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",3821,138,30,31])
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 } ,"rands":[{"$":"localref" ,"unbox?":false ,"pos":11 ,"clear":false ,"other-clears?":false ,"flonum?":false
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 }
 }
 }
-} ,{"$":"def-values" ,"ids":[{"$":"toplevel" ,"depth":0 ,"pos":5 ,"const?":false ,"ready?":false
+} ,{"$":"def-values" ,"ids":[{"$":"toplevel" ,"depth":0 ,"pos":6 ,"const?":false ,"ready?":false
 }
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-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":2 ,"pos":69 ,"const?":false ,"ready?":false
+} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",3910,141,17,7])
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":2 ,"pos":72 ,"const?":false ,"ready?":false
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 } ,{"$":"localref" ,"unbox?":false ,"pos":3 ,"clear":false ,"other-clears?":false ,"flonum?":false
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@@ -18689,23 +18734,23 @@ COLLECTIONS["bootstrap2011/cage-teachpack"] = { 'name': "bootstrap2011/cage-teac
 }
 }
 }
-} ,{"$":"def-values" ,"ids":[{"$":"toplevel" ,"depth":0 ,"pos":20 ,"const?":false ,"ready?":false
+} ,{"$":"def-values" ,"ids":[{"$":"toplevel" ,"depth":0 ,"pos":21 ,"const?":false ,"ready?":false
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+} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",4155,146,19,22])
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+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":5 ,"pos":70 ,"const?":false ,"ready?":false
+} ,"rands":[{"$":"toplevel" ,"depth":5 ,"pos":48 ,"const?":false ,"ready?":false
 } ,{"$":"constant" ,"value":180
 }
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@@ -18718,23 +18763,23 @@ COLLECTIONS["bootstrap2011/cage-teachpack"] = { 'name': "bootstrap2011/cage-teac
 }
 }
 }
-} ,{"$":"def-values" ,"ids":[{"$":"toplevel" ,"depth":0 ,"pos":27 ,"const?":false ,"ready?":false
+} ,{"$":"def-values" ,"ids":[{"$":"toplevel" ,"depth":0 ,"pos":28 ,"const?":false ,"ready?":false
 }
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+} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",4419,151,21,22])
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":1 ,"pos":66 ,"const?":false ,"ready?":false
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-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":3 ,"pos":69 ,"const?":false ,"ready?":false
+} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",4424,151,26,16])
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+} ,"rands":[{"$":"toplevel" ,"depth":5 ,"pos":48 ,"const?":false ,"ready?":false
 } ,{"$":"constant" ,"value":180
 }
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@@ -18747,23 +18792,23 @@ COLLECTIONS["bootstrap2011/cage-teachpack"] = { 'name': "bootstrap2011/cage-teac
 }
 }
 }
-} ,{"$":"def-values" ,"ids":[{"$":"toplevel" ,"depth":0 ,"pos":14 ,"const?":false ,"ready?":false
+} ,{"$":"def-values" ,"ids":[{"$":"toplevel" ,"depth":0 ,"pos":15 ,"const?":false ,"ready?":false
 }
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+} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",4687,156,27,16])
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+} ,"rands":[{"$":"toplevel" ,"depth":5 ,"pos":48 ,"const?":false ,"ready?":false
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 ]
@@ -18776,22 +18821,22 @@ COLLECTIONS["bootstrap2011/cage-teachpack"] = { 'name': "bootstrap2011/cage-teac
 }
 }
 }
-} ,{"$":"def-values" ,"ids":[{"$":"toplevel" ,"depth":0 ,"pos":21 ,"const?":false ,"ready?":false
+} ,{"$":"def-values" ,"ids":[{"$":"toplevel" ,"depth":0 ,"pos":22 ,"const?":false ,"ready?":false
 }
 ] ,"body":{"$":"lam" ,"name":types.symbol("pick") ,"flags":[
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 ] ,"max-let-depth":0 ,"body":{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
-} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",4650,158,4,36])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":2 ,"pos":54 ,"const?":false ,"ready?":false
+} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",4801,161,4,36])
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":2 ,"pos":56 ,"const?":false ,"ready?":false
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-} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",4664,158,18,21])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":3 ,"pos":40 ,"const?":false ,"ready?":false
+} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",4815,161,18,21])
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":3 ,"pos":41 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
-} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",4672,158,26,12])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":4 ,"pos":56 ,"const?":false ,"ready?":false
+} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",4823,161,26,12])
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":4 ,"pos":58 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"localref" ,"unbox?":false ,"pos":5 ,"clear":false ,"other-clears?":false ,"flonum?":false
 }
 ]
@@ -18804,22 +18849,22 @@ COLLECTIONS["bootstrap2011/cage-teachpack"] = { 'name': "bootstrap2011/cage-teac
 }
 }
 }
-} ,{"$":"def-values" ,"ids":[{"$":"toplevel" ,"depth":0 ,"pos":15 ,"const?":false ,"ready?":false
+} ,{"$":"def-values" ,"ids":[{"$":"toplevel" ,"depth":0 ,"pos":16 ,"const?":false ,"ready?":false
 }
 ] ,"body":{"$":"lam" ,"name":types.symbol("subset?") ,"flags":[
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-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":2 ,"pos":65 ,"const?":false ,"ready?":false
+} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",4972,166,4,50])
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":2 ,"pos":68 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"lam" ,"name":types.EMPTY ,"flags":[
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 ] ,"rest?":false ,"closure-map":[2 ,4
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 ] ,"max-let-depth":0 ,"body":{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
-} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",4848,164,19,14])
-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":2 ,"pos":52 ,"const?":false ,"ready?":false
+} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",4999,167,19,14])
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":2 ,"pos":54 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"localref" ,"unbox?":false ,"pos":4 ,"clear":false ,"other-clears?":false ,"flonum?":false
 } ,{"$":"localref" ,"unbox?":false ,"pos":3 ,"clear":false ,"other-clears?":false ,"flonum?":false
 }
@@ -18832,30 +18877,30 @@ COLLECTIONS["bootstrap2011/cage-teachpack"] = { 'name': "bootstrap2011/cage-teac
 }
 }
 }
-} ,{"$":"def-values" ,"ids":[{"$":"toplevel" ,"depth":0 ,"pos":26 ,"const?":false ,"ready?":false
+} ,{"$":"def-values" ,"ids":[{"$":"toplevel" ,"depth":0 ,"pos":27 ,"const?":false ,"ready?":false
 }
 ] ,"body":{"$":"lam" ,"name":types.symbol("in?") ,"flags":[
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 ] ,"max-let-depth":0 ,"body":{"$":"branch" ,"test":{"$":"with-cont-mark" ,"key":{"$":"constant" ,"value":types.symbol("moby-stack-record-continuation-mark-key")
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-} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":1 ,"pos":55 ,"const?":false ,"ready?":false
+} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",5055,171,8,9])
+} ,"body":{"$":"application" ,"rator":{"$":"toplevel" ,"depth":1 ,"pos":57 ,"const?":false ,"ready?":false
 } ,"rands":[{"$":"localref" ,"unbox?":false ,"pos":2 ,"clear":false ,"other-clears?":false ,"flonum?":false
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 }
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+} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",5065,171,18,13])
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+} ,"val":{"$":"constant" ,"value":types.vector(["bootstrap2011/cage-teachpack",5079,171,32,12])
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