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				@@ -286,10 +286,10 @@ selector: "doingVSPrinting", 
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				 category: 'pages', 
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				 fn: function (){ 
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				 var self=this; 
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				-return smalltalk.send((smalltalk.Lesson || Lesson), "_title_contents_", ["Doing VS Printing: Doing", "\x22Cool ! (I like to say Cooool :) ). You've just executed a Smalltalk expression. More precisely, you sent the message 'next' to\x0aProfStef class (it's me !).\x0a\x0aNote you can run this tutorial again by evaluating: 'ProfStef go'. \x0a'ProfStef previous' returns to the previous lesson.\x0a\x0aYou can also Do It using the keyboard shortcut 'CTRL d'\x0a\x0aTry to evaluate this expression:\x22\x0a\x0awindow alert: 'hello world!'.\x0a\x0a\x22Then go to the next lesson:\x22\x0a\x0aProfStef next."]); 
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				+return smalltalk.send((smalltalk.Lesson || Lesson), "_title_contents_", ["Doing VS Printing: Doing", "\x22Cool ! (I like to say Cooool :) ).\x0aYou've just executed a Smalltalk expression.\x0aMore precisely, you sent the message 'next' to ProfStef class (it's me !).\x0a\x0aNote you can run this tutorial again by evaluating: 'ProfStef go'. \x0a'ProfStef previous' returns to the previous lesson.\x0a\x0aYou can also Do It using the keyboard shortcut 'CTRL d'\x0a\x0aTry to evaluate this expression:\x22\x0a\x0awindow alert: 'hello world!'.\x0a\x0a\x22Then go to the next lesson:\x22\x0a\x0aProfStef next."]); 
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				 return self;}, 
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				 args: [], 
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				-source: "doingVSPrinting \x0a\x09^ Lesson\x0atitle: 'Doing VS Printing: Doing' \x0acontents: \x0a'\x22Cool ! (I like to say Cooool :) ). You''ve just executed a Smalltalk expression. More precisely, you sent the message ''next'' to\x0aProfStef class (it''s me !).\x0a\x0aNote you can run this tutorial again by evaluating: ''ProfStef go''. \x0a''ProfStef previous'' returns to the previous lesson.\x0a\x0aYou can also Do It using the keyboard shortcut ''CTRL d''\x0a\x0aTry to evaluate this expression:\x22\x0a\x0awindow alert: ''hello world!''.\x0a\x0a\x22Then go to the next lesson:\x22\x0a\x0aProfStef next.'", 
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				+source: "doingVSPrinting \x0a\x09^ Lesson\x0atitle: 'Doing VS Printing: Doing' \x0acontents: \x0a'\x22Cool ! (I like to say Cooool :) ).\x0aYou''ve just executed a Smalltalk expression.\x0aMore precisely, you sent the message ''next'' to ProfStef class (it''s me !).\x0a\x0aNote you can run this tutorial again by evaluating: ''ProfStef go''. \x0a''ProfStef previous'' returns to the previous lesson.\x0a\x0aYou can also Do It using the keyboard shortcut ''CTRL d''\x0a\x0aTry to evaluate this expression:\x22\x0a\x0awindow alert: ''hello world!''.\x0a\x0a\x22Then go to the next lesson:\x22\x0a\x0aProfStef next.'", 
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				 messageSends: ["title:contents:"], 
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				 referencedClasses: ["Lesson"] 
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				 }), 
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				@@ -478,10 +478,10 @@ selector: "pharoEnvironment", 
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				 category: 'pages', 
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				 fn: function (){ 
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				 var self=this; 
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				-return smalltalk.send((smalltalk.Lesson || Lesson), "_title_contents_", ["Pharo environment", "\x22Every Smalltalk system is full of objects. There are windows, text, numbers, dates, colors, points and much more. You can interact with objects in a much more direct way than is possible with other programming languages.\x0a\x0aEvery object understands the message 'explore'. As a result, you get an Explorer window that shows details about the object.\x22\x0a\x0aDate today explore.\x0a\x0a\x22This shows that the date object consists of a point in time (start) and a duration (one day long).\x22\x0a\x0aProfStef explore.\x0a\x0a\x22You see, ProfStef class has a lot of objects. Let's take a look at my code:\x22\x0a\x0aProfStef browse.\x0a\x0aProfStef next."]); 
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				+return smalltalk.send((smalltalk.Lesson || Lesson), "_title_contents_", ["Pharo environment", "\x22Every Smalltalk system is full of objects.\x0aThere are windows, text, numbers, dates, colors, points and much more.\x0aYou can interact with objects in a much more direct way than is possible with other programming languages.\x0a\x0aEvery object understands the message 'explore'. As a result, you get an Explorer window that shows details about the object.\x22\x0a\x0aDate today explore.\x0a\x0a\x22This shows that the date object consists of a point in time (start) and a duration (one day long).\x22\x0a\x0aProfStef explore.\x0a\x0a\x22You see, ProfStef class has a lot of objects. Let's take a look at my code:\x22\x0a\x0aProfStef browse.\x0a\x0aProfStef next."]); 
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				 return self;}, 
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				 args: [], 
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				-source: "pharoEnvironment\x0a\x09^ Lesson\x0atitle: 'Pharo environment' \x0acontents: \x0a'\x22Every Smalltalk system is full of objects. There are windows, text, numbers, dates, colors, points and much more. You can interact with objects in a much more direct way than is possible with other programming languages.\x0a\x0aEvery object understands the message ''explore''. As a result, you get an Explorer window that shows details about the object.\x22\x0a\x0aDate today explore.\x0a\x0a\x22This shows that the date object consists of a point in time (start) and a duration (one day long).\x22\x0a\x0aProfStef explore.\x0a\x0a\x22You see, ProfStef class has a lot of objects. Let''s take a look at my code:\x22\x0a\x0aProfStef browse.\x0a\x0aProfStef next.'", 
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				+source: "pharoEnvironment\x0a\x09^ Lesson\x0atitle: 'Pharo environment' \x0acontents: \x0a'\x22Every Smalltalk system is full of objects.\x0aThere are windows, text, numbers, dates, colors, points and much more.\x0aYou can interact with objects in a much more direct way than is possible with other programming languages.\x0a\x0aEvery object understands the message ''explore''. As a result, you get an Explorer window that shows details about the object.\x22\x0a\x0aDate today explore.\x0a\x0a\x22This shows that the date object consists of a point in time (start) and a duration (one day long).\x22\x0a\x0aProfStef explore.\x0a\x0a\x22You see, ProfStef class has a lot of objects. Let''s take a look at my code:\x22\x0a\x0aProfStef browse.\x0a\x0aProfStef next.'", 
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				 messageSends: ["title:contents:"], 
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				 referencedClasses: ["Lesson"] 
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				 }), 
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				@@ -494,10 +494,10 @@ selector: "printing", 
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				 category: 'pages', 
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				 fn: function (){ 
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				 var self=this; 
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				-return smalltalk.send((smalltalk.Lesson || Lesson), "_title_contents_", ["Doing VS Printing: Printing", "\x22Now you're a Do It master ! Let's talk about printing. It's a Do It which prints the result next to the expression you've selected.\x0aFor example, select the text below, and click on 'PrintIt':\x22\x0a\x0a1 + 2.\x0a\x0a\x22As with 'DoIt', there is also a shortcut to execute this command.\x0a\x0aTry CTRL-p on the following expressions:\x22\x0a\x0aDate today.\x0a\x0a\x22The result is selected, so you can erase it using the backspace key. Try it !\x22\x0a\x0aDate today asDateString.\x0a\x0aDate today asTimeString.\x0a\x0aProfStef next."]); 
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				+return smalltalk.send((smalltalk.Lesson || Lesson), "_title_contents_", ["Doing VS Printing: Printing", "\x22Now you're a Do It master ! Let's talk about printing.\x0aIt's a Do It which prints the result next to the expression you've selected.\x0aFor example, select the text below, and click on 'PrintIt':\x22\x0a\x0a1 + 2.\x0a\x0a\x22As with 'DoIt', there is also a shortcut to execute this command.\x0a\x0aTry CTRL-p on the following expressions:\x22\x0a\x0aDate today.\x0a\x0a\x22The result is selected, so you can erase it using the backspace key. Try it !\x22\x0a\x0aDate today asDateString.\x0a\x0aDate today asTimeString.\x0a\x0aProfStef next."]); 
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				 return self;}, 
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				 args: [], 
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				-source: "printing \x0a\x09^ Lesson\x0atitle: 'Doing VS Printing: Printing' \x0acontents: \x0a'\x22Now you''re a Do It master ! Let''s talk about printing. It''s a Do It which prints the result next to the expression you''ve selected.\x0aFor example, select the text below, and click on ''PrintIt'':\x22\x0a\x0a1 + 2.\x0a\x0a\x22As with ''DoIt'', there is also a shortcut to execute this command.\x0a\x0aTry CTRL-p on the following expressions:\x22\x0a\x0aDate today.\x0a\x0a\x22The result is selected, so you can erase it using the backspace key. Try it !\x22\x0a\x0aDate today asDateString.\x0a\x0aDate today asTimeString.\x0a\x0aProfStef next.'", 
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				+source: "printing \x0a\x09^ Lesson\x0atitle: 'Doing VS Printing: Printing' \x0acontents: \x0a'\x22Now you''re a Do It master ! Let''s talk about printing.\x0aIt''s a Do It which prints the result next to the expression you''ve selected.\x0aFor example, select the text below, and click on ''PrintIt'':\x22\x0a\x0a1 + 2.\x0a\x0a\x22As with ''DoIt'', there is also a shortcut to execute this command.\x0a\x0aTry CTRL-p on the following expressions:\x22\x0a\x0aDate today.\x0a\x0a\x22The result is selected, so you can erase it using the backspace key. Try it !\x22\x0a\x0aDate today asDateString.\x0a\x0aDate today asTimeString.\x0a\x0aProfStef next.'", 
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				 messageSends: ["title:contents:"], 
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				 referencedClasses: ["Lesson"] 
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				 }), 
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				@@ -558,10 +558,10 @@ selector: "theEnd", 
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				 category: 'pages', 
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				 fn: function (){ 
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				 var self=this; 
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				-return smalltalk.send((smalltalk.Lesson || Lesson), "_title_contents_", ["Tutorial done !", "\x22This tutorial is done. Enjoy programming Smalltalk with JTalk. \x0a\x0aYou can run this tutorial again by evaluating: ProfStef go.\x0a\x0aSee you soon !\x22\x0a"]); 
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				+return smalltalk.send((smalltalk.Lesson || Lesson), "_title_contents_", ["Tutorial done !", "\x22This tutorial is done. Enjoy programming Smalltalk with Amber. \x0a\x0aYou can run this tutorial again by evaluating: ProfStef go.\x0a\x0aSee you soon !\x22\x0a"]); 
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				 return self;}, 
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				 args: [], 
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				-source: "theEnd\x0a\x09^ Lesson\x0atitle: 'Tutorial done !' \x0acontents: \x0a'\x22This tutorial is done. Enjoy programming Smalltalk with JTalk. \x0a\x0aYou can run this tutorial again by evaluating: ProfStef go.\x0a\x0aSee you soon !\x22\x0a'", 
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				+source: "theEnd\x0a\x09^ Lesson\x0atitle: 'Tutorial done !' \x0acontents: \x0a'\x22This tutorial is done. Enjoy programming Smalltalk with Amber. \x0a\x0aYou can run this tutorial again by evaluating: ProfStef go.\x0a\x0aSee you soon !\x22\x0a'", 
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				 messageSends: ["title:contents:"], 
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				 referencedClasses: ["Lesson"] 
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				 }), 
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