#reader(lib"read.ss""wxme")WXME0108 ## 
#|
   This file uses the GRacket editor format.
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   Most likely, it was created by saving a program in DrRacket,
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 #"\300\6\217\314f30\rE\240\263\21\224_^^\322S\361\a7Ce0\335"
 #"\26\374\340?\273|\340\311:^*\2318\216e;D\25\334\6\367\255\353Z\236"
 #"\225\e\240Q\b\346y\236(\22y@6D\267\2112Dv\320Q\347\272.\264"
 #"\3468\316o\4\20kH$\306\26gggX@\177\324\227\220z;\"!\17"
 #"\370\216\242\310\367}\307q\220\255\204K"
 #"f\6g\270\16\2\353\b\371\242xh\1e\37\366\344\335QH\334 \3132t"
 #"w777\20]\n2\354\262Z\255p\203R\nVBT\25\201\245\330\264m"
 #"\e;@\337r\35\233s\237\277?\177"
 #"\376\f4\212\265%T\234\234\234\234\236\236\342\221$Iv\t\360d\35OD\37"
 #">|\20\323K\322e\346\255n\20\265>\21\275\177\377^\300\6\317\1\5A "
 #"\362\340\218\333b\261x\377\376=\264"
 #"\243\337\214\346\246,K\311\233\273,\260"
 #"\243\216\27 \302\312Y\226\25E\201\355$\370H\236\26\0 X\311\263A\20H"
 #"\247\6^aC\335\31\200u\374\252{"
 #"#\326\220v\227\5\304\207\260\20\326\35"
 #"\307\321\325\206\27K\231%\245\21\20H\373\223\b\6\212\343Xb\321c:D\0"
 #"\"\32\16\207\370\tj@M\212+]"
 #"\327\3118d6\233\355\313\375\321\321\221"
 #"\310\200\265\364e/#\200\330\27\374\351"
 #"\201_\257X \222\236\247\376\\\375\b"
 #"J\360o@q\313\273\376J\0\317\363\220,\361S\236\347[\375M\327u\377w"
 #"\e\207\22,0\231Lv\260w\240\0\242~\301\t\367\225V\3234\270\23\31`"
 #"\327,d'\241\230\213\343\30\361#I"
 #"\222\35s\241\275\5@\34\304\365\331l"
 #"\266\\.\201~\351\274`\212\305ba\333\366\226;\376\t\305ql\30"
 #"\206eYR\220\243\364\1771\1\0Mf\376\366\355\e~\315\363\\<"
) 500
(
 #"\370\352\352\352a_\"\244\233\303(\b"
 #"\2\354\211\300\377\222\2\240~\206\327\326"
 #"u\255\e\27\341\2\267!~\37\200\"\313\262<\317[,\26pe\311\350\207\b"
 #"\240\307/\224\220\266m#1\2417\205`\242!\324\353\222Aq\247\324\252R\6"
 #"\2432\205l\230\240\300\252\"\255\224\253\266m\vbI\253;\320Z\264m[\24"
 #"\305o:\262\315f\223e\231H\202\347"
 #"}\337\37\217\307\270\202\226\22\327?}"
 #"\372\4>\300\26\326\230D \242\353\3"
 #"\225-\246!U\24E\314\214\234\255\227"
 #"\0222/B\301g\30\206\347y\17\305"
 #"\322\16\326\267\376\315\363\334\262,\231\2100sQ\24pS\341\30\nCy\254/"
 #"\250/`q\177\34\307\334\237\304\340Yp\263\\.u\243!^Cx\331*\f"
 #"C\230h\275^+\245vY\0n\204\361*\367C%a\210\231\241Ep6\235"
 #"N\345\225q\34\353-\342V\367\310\217\"\362c}\261\6Z\271S\222\3\f\310"
 #"\314i\232>+\0\246\362\b\360]\327!\306c0:\235NOOO\357\356\356"
 #"|\337\227\371\202\376\16\220\336@\tT"
 #"\230Yty~~\316}\321\312\375\240\212\265\241\1h0\30\270\256\ve\301\367"
 #"\3608\270\372\243\246^?\341\251\252\n\317\243L\0R\1J\375T\vF7M"
 #"\23\225\37`-^\210B\232\36\3259z\17\270X,\200\253\266m7\233\r\260"
 #"$X\345\36\201\273,\200\205\30W4$}\267\350UW\274m\333q\34\313\24"
 #"\221z\177\25\364\377\337\r\366\31\35\323"
 #"$\f*\205\1YK\302\341\276\351\341~\f\365\e\b\361\257\221TD\322#O"
 #"\20\4`\5\374\351^KZ\3414\231L\3042p\17\327u\5\242\374\353)\230"
 #"^\314\352W\244\255-\212\2\0\251\252j\357\301\26\f\222$\2110"
 #"\364\344\\M\320\2025\304CT\225\\\376\"\264w\246\4\320\3438"
) 500
(
 #"n\232\6!\25S\177\326r0\0215M\343\272.\324\217\6m4\32Y\226\205"
 #"\371\322\276/\335E\a\b-\201\225z\314\330\266-q\23#h\375\25r\17\21"
 #"y\236\347\272\256\216\365\277$\203\367\254"
 #"\332\233\246q\34\a'\207Q\249\216S\226%\224\nl\210\202'\223\t:\346"
 #"\266m\35\307\221\360G\217R\301_\321"
 #"\1B\313\240\16\321\215z\277\24\334\273\256+\36\"#Qd:T\23\277-\321"
 #"\376\234\169\344\363}\37\307\34\360\207"
 #"\207!k\357\f\244\25a\347\347\347m"
 #"\333\32\206\21E\21\372c\214\26%\234\277\0\355+1\22MY\226\3503P\364"
 #"KE$\223q\":99I\222Dr\5\2160\364\361\333\213\320\336\2\264m"
 #"\213\30\214\263N\352\vI\341\e\265\227\347yr\340uyy)g3\216\343\350"
 #"\275\350\277\21\200\373JK&\24@\374p8\324\235\201{O\225\314}qq\201"
 #"d\264\343\353\223W\27\200\373Y/\306\272R\265KU's}\\\304\201\227\343"
 #"8\220VN\242\376\245\0\30\26\bl"
 #"\340\221\276\357C\361\210\372m\333\236\235"
 #"\235\311\t6L\204bd\307\230\355-\4\20\f\200u\2342\210\35F\243Q\20"
 #"\4i\232J\355\0g\330\212\26\273\207m\257+\0\367G\305z\5\212\23_\240"
 #"\277i\232\262,=\317\223\2414\367\247"
 #"\310J\251\233\233\233\35_n\274\205\0"
 #"\272\362\306\343\361\307\217\37\251\257\253\243"
 #"(\2\270\21\210\20^\245\32\327\35\367"
 #"q\377u0\35\350\304\17\243\355>\4\301\rNOO\3234E:\e\215Fp"
 #"\6\356\213\341\242( \336\vr\177\210"
 #"\0`\35\345\273(^r\331\303\246="
 #"\341\254N\377\324\22~\274\373K\312\275"
 #"h\357R\2\36\211\370\3W\26g\220\212MN%\360\327\363<\30\315"
 #"q\34\224zz\273\374\267t\230\334Y\226\241]\302&rH,\215\25"
) 207
(
 #"\375\332\342\340\242\234G\355\236\26\356E"
 #"\a\206QPQ\24\222e\247\323\251\314"
 #"\27\346\3639\352m\333\266\307\343\261X"
 #"\203\265q\374K\321!\237\333\350G\256"
 #"a\30\352\335c\3234\242f\301\211\34s\270\256+#\333\177&\0\3678Y."
 #"\227rZ\fB\207)7\340\363\2dh=(\355\36\227\277\272\0\372\370\340\341"
 #"\263;\"\352\213P\"\222\b#\31\343\352\352J\326\b\251/X\220\36\30FW"
 #"\253\225\34Bz\236'\337\r`\330&\325NUU\372\267]eY\276`\31\a"
 #"\332\273'n\333\326\266m\234\341\205a\210Ol\360\23\302%6D\333 c\""
 #"\300)\b\2<^\24\305\326\4\351`\372\17\361I\313"
 #"\274[R\206\v\0\0\0\0IEND\256B`\202"
) 0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 17 3 47 #"; remember: compound expressions in Racket have"
0 0 62 29 1 #"\n"
0 0 17 3 16 #";    the syntax:"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 17 3 39 #"; (operation expression expression ...)"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 17 3 42 #"; arithmetic operations on numbers include"
0 0 62 29 1 #"\n"
0 0 17 3 42 #";    +  -   *   /   sin   cos tan and more"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 17 3 46 #"; this is a compound expression of type number"
0 0 62 29 1 #"\n"
0 0 22 3 1 #"("
0 0 14 3 1 #"+"
0 0 62 3 1 #" "
0 0 20 3 1 #"6"
0 0 62 3 1 #" "
0 0 20 3 3 #"7.8"
0 0 62 3 1 #" "
0 0 20 3 5 #"99.45"
0 0 22 3 1 #")"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 17 3 38 #"; there are operations on strings, too"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 17 3 43 #"; string-append expects string expressions "
0 0 62 29 1 #"\n"
0 0 17 3 44 #";    and produces a new string that is those"
0 0 62 29 1 #"\n"
0 0 17 3 29 #";    strings smushed together"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 22 3 1 #"("
0 0 14 3 13 #"string-append"
0 0 62 3 1 #" "
0 0 18 3 4 #"\"he\""
0 0 62 3 1 #" "
0 0 18 3 5 #"\"llo\""
0 0 22 3 1 #")"
0 0 62 29 1 #"\n"
0 0 22 3 1 #"("
0 0 14 3 13 #"string-append"
0 0 62 3 1 #" "
0 0 18 3 4 #"\"he\""
0 0 62 3 1 #" "
0 0 18 3 5 #"\"llo\""
0 0 62 3 1 #" "
0 0 18 3 7 #"\"there\""
0 0 22 3 1 #")"
0 0 62 29 1 #"\n"
0 0 22 3 1 #"("
0 0 14 3 13 #"string-append"
0 0 62 3 1 #" "
0 0 18 3 3 #"\"h\""
0 0 62 3 1 #" "
0 0 18 3 8 #"\"ello t\""
0 0 62 3 1 #" "
0 0 18 3 6 #"\"here\""
0 0 22 3 1 #")"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 17 3 46 #"; string-length expect a string expression and"
0 0 62 29 1 #"\n"
0 0 17 3 48 #";    produces a number, the number of characters"
0 0 62 29 1 #"\n"
0 0 17 3 19 #";    in that string"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 22 3 1 #"("
0 0 14 3 13 #"string-length"
0 0 62 3 1 #" "
0 0 18 3 7 #"\"hello\""
0 0 22 3 1 #")"
0 0 62 3 1 #" "
0 0 17 3 35 #"; note: the type of this expression"
0 0 62 29 1 #"\n"
0 0 62 3 24 #"                        "
0 0 17 3 14 #";   is number!"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 22 3 1 #"("
0 0 14 3 1 #"+"
0 0 62 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 13 #"string-length"
0 0 62 3 1 #" "
0 0 18 3 7 #"\"hello\""
0 0 22 3 1 #")"
0 0 62 3 1 #" "
0 0 20 3 2 #"10"
0 0 22 3 1 #")"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 17 3 44 #"; string=? expects strings and produces true"
0 0 62 29 1 #"\n"
0 0 17 3 52 #";    if they are equivalent (have the same contents)"
0 0 62 29 1 #"\n"
0 0 17 3 33 #";    and produces false otherwise"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 22 3 1 #"("
0 0 14 3 8 #"string=?"
0 0 62 3 1 #" "
0 0 18 3 7 #"\"goofy\""
0 0 62 3 1 #" "
0 0 62 29 1 #"\n"
0 0 62 3 10 #"          "
0 0 22 3 1 #"("
0 0 14 3 13 #"string-append"
0 0 62 3 1 #" "
0 0 18 3 5 #"\"goo\""
0 0 62 3 1 #" "
0 0 18 3 4 #"\"fy\""
0 0 22 3 2 #"))"
0 0 62 29 1 #"\n"
0 0 22 3 1 #"("
0 0 14 3 8 #"string=?"
0 0 62 3 1 #" "
0 0 18 3 7 #"\"goofy\""
0 0 62 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 13 #"string-append"
0 0 62 3 1 #" "
0 0 18 3 5 #"\"gof\""
0 0 62 3 1 #" "
0 0 18 3 4 #"\"oy\""
0 0 22 3 2 #"))"
0 0 62 29 1 #"\n"
0 0 22 3 1 #"("
0 0 14 3 8 #"string=?"
0 0 62 3 1 #" "
0 0 18 3 3 #"\"a\""
0 0 62 3 1 #" "
0 0 18 3 3 #"\"a\""
0 0 62 3 1 #" "
0 0 18 3 3 #"\"a\""
0 0 62 3 1 #" "
0 0 18 3 3 #"\"a\""
0 0 22 3 1 #")"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 17 3 42 #"; string->number expects a suitable string"
0 0 62 29 1 #"\n"
0 0 17 3 50 #";    (one that \"looks\" like a number) and produces"
0 0 62 29 1 #"\n"
0 0 17 3 26 #";    the equivalent number"
0 0 62 29 1 #"\n"
0 0 17 3 48 #"; ...interesting quirk: if the string's contents"
0 0 62 29 1 #"\n"
0 0 17 3 47 #";    can't be converted reasonably to a number,"
0 0 62 29 1 #"\n"
0 0 17 3 33 #";    it produces a boolean, false"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 22 3 1 #"("
0 0 14 3 14 #"string->number"
0 0 62 3 1 #" "
0 0 18 3 4 #"\"42\""
0 0 22 3 1 #")"
0 0 62 29 1 #"\n"
0 0 22 3 1 #"("
0 0 14 3 14 #"string->number"
0 0 62 3 1 #" "
0 0 18 3 8 #"\"george\""
0 0 22 3 1 #")"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 17 3 46 #"; number->string expects a number and produces"
0 0 62 29 1 #"\n"
0 0 17 3 25 #";    an equivalent string"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 22 3 1 #"("
0 0 14 3 14 #"number->string"
0 0 62 3 1 #" "
0 0 20 3 3 #"158"
0 0 22 3 1 #")"
0 0 62 29 1 #"\n"
0 0 22 3 1 #"("
0 0 14 3 14 #"number->string"
0 0 62 3 1 #" "
0 0 20 3 4 #"42.3"
0 0 22 3 1 #")"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 17 3 36 #"; relational operations: > < >= <= ="
0 0 62 29 1 #"\n"
0 0 17 3 51 #";    compare number expressions and produce boolean"
0 0 62 29 1 #"\n"
0 0 17 3 44 #";    (this = only works to compare numbers!)"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 22 3 1 #"("
0 0 14 3 1 #"<"
0 0 62 3 1 #" "
0 0 20 3 1 #"1"
0 0 62 3 1 #" "
0 0 20 3 1 #"3"
0 0 22 3 1 #")"
0 0 62 29 1 #"\n"
0 0 22 3 1 #"("
0 0 14 3 1 #"="
0 0 62 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 1 #"+"
0 0 62 3 1 #" "
0 0 20 3 1 #"1"
0 0 62 3 1 #" "
0 0 20 3 1 #"1"
0 0 22 3 1 #")"
0 0 62 3 1 #" "
0 0 20 3 1 #"2"
0 0 22 3 1 #")"
0 0 62 29 1 #"\n"
0 0 17 3 53 #";(= \"four\" 4)  ; can't do this, \"four\" isn't a number"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 17 3 32 #"; boolean operations: and or not"
0 0 62 29 1 #"\n"
0 0 17 3 53 #"; and: expects boolean expressions, and produces true"
0 0 62 29 1 #"\n"
0 0 17 3 41 #";    if ALL of those expressions are true"
0 0 62 29 1 #"\n"
0 0 17 3 52 #"; or: expects boolean expressions, and produces true"
0 0 62 29 1 #"\n"
0 0 17 3 49 #";    if AT LEAST ONE of those expressions is true"
0 0 62 29 1 #"\n"
0 0 17 3 49 #"; not: expects a boolean expression, and produces"
0 0 62 29 1 #"\n"
0 0 17 3 53 #";    true of that expression is false, and vice versa"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 22 3 1 #"("
0 0 14 3 3 #"and"
0 0 62 3 1 #" "
0 0 14 3 4 #"true"
0 0 62 3 1 #" "
0 0 14 3 4 #"true"
0 0 22 3 1 #")"
0 0 62 29 1 #"\n"
0 0 22 3 1 #"("
0 0 14 3 3 #"and"
0 0 62 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 1 #"<"
0 0 62 3 1 #" "
0 0 20 3 1 #"1"
0 0 62 3 1 #" "
0 0 20 3 1 #"3"
0 0 22 3 1 #")"
0 0 62 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 1 #"<"
0 0 62 3 1 #" "
0 0 20 3 1 #"3"
0 0 62 3 1 #" "
0 0 20 3 1 #"5"
0 0 22 3 2 #"))"
0 0 62 29 1 #"\n"
0 0 22 3 1 #"("
0 0 14 3 3 #"and"
0 0 62 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 1 #"<"
0 0 62 3 1 #" "
0 0 20 3 1 #"1"
0 0 62 3 1 #" "
0 0 20 3 1 #"3"
0 0 22 3 1 #")"
0 0 62 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 1 #"<"
0 0 62 3 1 #" "
0 0 20 3 3 #"100"
0 0 62 3 1 #" "
0 0 20 3 1 #"5"
0 0 22 3 2 #"))"
0 0 62 29 1 #"\n"
0 0 22 3 1 #"("
0 0 14 3 2 #"or"
0 0 62 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 1 #"<"
0 0 62 3 1 #" "
0 0 20 3 1 #"1"
0 0 62 3 1 #" "
0 0 20 3 1 #"3"
0 0 22 3 1 #")"
0 0 62 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 1 #"<"
0 0 62 3 1 #" "
0 0 20 3 3 #"100"
0 0 62 3 1 #" "
0 0 20 3 1 #"5"
0 0 22 3 2 #"))"
0 0 62 29 1 #"\n"
0 0 22 3 1 #"("
0 0 14 3 3 #"not"
0 0 62 3 1 #" "
0 0 14 3 4 #"true"
0 0 22 3 1 #")"
0 0 62 29 1 #"\n"
0 0 22 3 1 #"("
0 0 14 3 3 #"not"
0 0 62 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 1 #"="
0 0 62 3 1 #" "
0 0 20 3 1 #"1"
0 0 62 3 1 #" "
0 0 20 3 1 #"3"
0 0 22 3 2 #"))"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 17 3 48 #"; the image and universe teachpacks provide MANY"
0 0 62 29 1 #"\n"
0 0 17 3 45 #";    image and otherwise graphical operations"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 17 3 59
#"; this is a SIGNATURE -- gives the name of an operation and"
0 0 62 29 1 #"\n"
0 0 17 3 56 #";   types of expressions it expects and type it produces"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 17 3 39 #"; circle: number string string -> image"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 17 3 53 #"; this is a PURPOSE STATEMENT -- it DESCRIBES what an"
0 0 62 29 1 #"\n"
0 0 17 3 52 #";   operation expects and DESCRIBES what it produces"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 17 3 50 #"; purpose: expects a radius in pixels, \"solid\" or "
0 0 62 29 1 #"\n"
0 0 17 3 19 #";    \"outline\", and"
0 0 62 29 1 #"\n"
0 0 17 3 50 #";    a color (expressed as a string), and produces"
0 0 62 29 1 #"\n"
0 0 17 3 44 #";    a circle of that size, style, and color"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 17 3 48 #"; pixel: picture element - 1 \"dot\" on the screen"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 22 3 1 #"("
0 0 14 3 6 #"circle"
0 0 62 3 1 #" "
0 0 20 3 3 #"0.5"
0 0 62 3 1 #" "
0 0 18 3 7 #"\"solid\""
0 0 62 3 1 #" "
0 0 18 3 7 #"\"black\""
0 0 22 3 1 #")"
0 0 62 29 1 #"\n"
0 0 22 3 1 #"("
0 0 14 3 6 #"circle"
0 0 62 3 1 #" "
0 0 20 3 2 #"20"
0 0 62 3 1 #" "
0 0 18 3 9 #"\"outline\""
0 0 62 3 1 #" "
0 0 18 3 5 #"\"red\""
0 0 22 3 1 #")"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 17 3 52 #"; an IDENTIFIER is a name determined by a programmer"
0 0 62 29 1 #"\n"
0 0 17 3 48 #"; in Racket: just about any string of characters"
0 0 62 29 1 #"\n"
0 0 17 3 38 #";    (no blanks!) that doesn't include"
0 0 62 29 1 #"\n"
0 0 17 3 30 #";    ( ) [ ] { } \" , ' ` # | \\"
0 0 62 29 1 #"\n"
0 0 17 3 54 #"; and doesn't look like a number, string, or a boolean"
0 0 62 29 1 #"\n"
0 0 17 3 40 #"; nice style: start 'em with a letter..."
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 17 3 53 #"; you can give an identifier a desired value with the"
0 0 62 29 1 #"\n"
0 0 17 3 20 #";   define operation"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 17 3 32 #"; (define identifier expression)"
0 0 62 29 1 #"\n"
0 0 17 3 53 #"; produces nothing, but has the SIDE-EFFECT that that"
0 0 62 29 1 #"\n"
0 0 17 3 53 #";     identifier now has the value of that expression"
0 0 62 29 1 #"\n"
0 0 17 3 59
#"; (it is now a SIMPLE EXPRESSION whose value is that value)"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 22 3 1 #"("
0 0 15 3 6 #"define"
0 0 62 3 1 #" "
0 0 14 3 7 #"red-dot"
0 0 62 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 6 #"circle"
0 0 62 3 1 #" "
0 0 20 3 2 #"10"
0 0 62 3 1 #" "
0 0 18 3 7 #"\"solid\""
0 0 62 3 1 #" "
0 0 18 3 5 #"\"red\""
0 0 22 3 2 #"))"
0 0 62 29 1 #"\n"
0 0 14 3 7 #"red-dot"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 17 3 34 #"; beside: image image ... -> image"
0 0 62 29 1 #"\n"
0 0 17 3 48 #"; purpose: expects images, and produces an image"
0 0 62 29 1 #"\n"
0 0 17 3 44 #";    with all those images beside each other"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 22 3 1 #"("
0 0 14 3 6 #"beside"
0 0 62 3 1 #" "
0 0 14 3 7 #"red-dot"
0 0 62 3 1 #" "
0 0 14 3 7 #"red-dot"
0 0 62 3 1 #" "
0 0 14 3 7 #"red-dot"
0 0 22 3 1 #")"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 17 3 33 #"; above: image image ... -> image"
0 0 62 29 1 #"\n"
0 0 17 3 49 #";  purpose: expects images, and produces an image"
0 0 62 29 1 #"\n"
0 0 17 3 47 #";    with all those images one above each other"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 22 3 1 #"("
0 0 14 3 5 #"above"
0 0 62 3 1 #" "
0 0 14 3 7 #"red-dot"
0 0 62 3 1 #" "
0 0 14 3 7 #"red-dot"
0 0 62 3 1 #" "
0 0 14 3 7 #"red-dot"
0 0 22 3 1 #")"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 17 3 35 #"; overlay: image image ... -> image"
0 0 62 29 1 #"\n"
0 0 17 3 53 #"; purpose: expects images and lays the first image on"
0 0 62 29 1 #"\n"
0 0 17 3 54 #";     the second image on the third image ... lined up"
0 0 62 29 1 #"\n"
0 0 17 3 22 #";     by their centers"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 22 3 1 #"("
0 0 14 3 7 #"overlay"
0 0 62 3 1 #" "
0 0 14 3 7 #"red-dot"
0 0 62 29 1 #"\n"
0 0 62 3 9 #"         "
0 0 22 3 1 #"("
0 0 14 3 6 #"circle"
0 0 62 3 1 #" "
0 0 20 3 2 #"20"
0 0 62 3 1 #" "
0 0 18 3 7 #"\"solid\""
0 0 62 3 1 #" "
0 0 18 3 6 #"\"blue\""
0 0 22 3 1 #")"
0 0 62 29 1 #"\n"
0 0 62 3 9 #"         "
0 0 22 3 1 #"("
0 0 14 3 6 #"circle"
0 0 62 3 1 #" "
0 0 20 3 2 #"40"
0 0 62 3 1 #" "
0 0 18 3 7 #"\"solid\""
0 0 62 3 1 #" "
0 0 18 3 7 #"\"green\""
0 0 22 3 2 #"))"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 17 3 34 #"; one more operation: check-expect"
0 0 62 29 1 #"\n"
0 0 17 3 52 #"; expects 2 expressions, and has an odd side-effect:"
0 0 62 29 1 #"\n"
0 0 17 3 57 #";    IF, for all check-expects in the Definitions window,"
0 0 62 29 1 #"\n"
0 0 17 3 51 #";       the two expressions produce the same value,"
0 0 62 29 1 #"\n"
0 0 17 3 57 #";    you get a message saying how many tests have passed."
0 0 62 29 1 #"\n"
0 0 17 3 56 #";    ELSE, you get a separate window pointing out which "
0 0 62 29 1 #"\n"
0 0 17 3 20 #";       ones didn't!"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 22 3 1 #"("
0 0 14 3 12 #"check-expect"
0 0 62 3 1 #" "
0 0 22 3 1 #"("
0 0 14 3 1 #"+"
0 0 62 3 1 #" "
0 0 20 3 1 #"1"
0 0 62 3 1 #" "
0 0 20 3 1 #"1"
0 0 22 3 1 #")"
0 0 62 3 1 #" "
0 0 20 3 1 #"2"
0 0 22 3 1 #")"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 17 3 50 #"; note: this is an example of a test that fails..."
0 0 62 29 1 #"\n"
0 0 17 3 51 #";    ...but you'll still see the red dot afterwards"
0 0 4 29 1 #"\n"
0 0 17 3 50 #";    (the test failing doesn't halt the execution)"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 22 3 1 #"("
0 0 14 3 12 #"check-expect"
0 0 62 3 1 #" "
0 0 14 3 4 #"true"
0 0 62 3 1 #" "
0 0 14 3 5 #"false"
0 0 22 3 1 #")"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 14 3 7 #"red-dot"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0 0 62 29 1 #"\n"
0           0