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				@@ -65,46 +65,6 @@ referencedClasses: [] 
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				 }), 
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				 globals.Node); 
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				-smalltalk.addMethod( 
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				-smalltalk.method({ 
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				-selector: "atPosition:", 
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				-protocol: 'accessing', 
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				-fn: function (aPoint){ 
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				-var self=this; 
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				-var children; 
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				-return smalltalk.withContext(function($ctx1) {  
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				-var $3,$2,$1; 
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				-var $early={}; 
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				-try { 
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				-children=_st(self._allNodes())._select_((function(each){ 
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				-return smalltalk.withContext(function($ctx2) { 
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				-return _st(_st(each)._isNavigationNode())._and_((function(){ 
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				-return smalltalk.withContext(function($ctx3) { 
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				-return _st(each)._inPosition_(aPoint); 
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				-}, function($ctx3) {$ctx3.fillBlock({},$ctx2,2)})})); 
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				-}, function($ctx2) {$ctx2.fillBlock({each:each},$ctx1,1)})})); 
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				-_st(children)._ifEmpty_((function(){ 
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				-throw $early=[nil]; 
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				-})); 
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				-$1=_st(_st(_st(children)._asArray())._sort_((function(a,b){ 
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				-return smalltalk.withContext(function($ctx2) { 
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				-$3=_st(a)._positionStart(); 
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				-$ctx2.sendIdx["positionStart"]=1; 
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				-$2=_st($3)._dist_(aPoint); 
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				-$ctx2.sendIdx["dist:"]=1; 
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				-return _st($2).__lt_eq(_st(_st(b)._positionStart())._dist_(aPoint)); 
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				-}, function($ctx2) {$ctx2.fillBlock({a:a,b:b},$ctx1,4)})})))._first(); 
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				-return $1; 
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				-} 
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				-catch(e) {if(e===$early)return e[0]; throw e} 
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				-}, function($ctx1) {$ctx1.fill(self,"atPosition:",{aPoint:aPoint,children:children},globals.Node)})}, 
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				-args: ["aPoint"], 
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				-source: "atPosition: aPoint\x0a\x09\x22Answer the navigation node in the receiver's tree at aPoint \x0a\x09or nil if no navigation node was found.\x0a\x09\x0a\x09See `node >> isNaviationNode`\x22\x0a\x09\x0a\x09| children |\x0a\x09\x0a\x09children := self allNodes select: [ :each | \x0a\x09\x09each isNavigationNode and: [ each inPosition: aPoint ] ].\x0a\x09\x0a\x09children ifEmpty: [ ^ nil ].\x0a\x09\x0a\x09^ (children asArray sort: [ :a :b | \x0a\x09\x09(a positionStart dist: aPoint) <= \x0a\x09\x09(b positionStart dist: aPoint) ]) first", 
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				-messageSends: ["select:", "allNodes", "and:", "isNavigationNode", "inPosition:", "ifEmpty:", "first", "sort:", "asArray", "<=", "dist:", "positionStart"], 
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				-referencedClasses: [] 
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				-}), 
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				-globals.Node); 
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				- 
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				 smalltalk.addMethod( 
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				 smalltalk.method({ 
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				 selector: "inPosition:", 
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				@@ -389,6 +349,48 @@ referencedClasses: [] 
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				 }), 
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				 globals.Node); 
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				+smalltalk.addMethod( 
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				+smalltalk.method({ 
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				+selector: "navigationNodeAt:ifAbsent:", 
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				+protocol: 'accessing', 
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				+fn: function (aPoint,aBlock){ 
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				+var self=this; 
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				+var children; 
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				+return smalltalk.withContext(function($ctx1) {  
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				+var $1,$4,$3,$2; 
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				+var $early={}; 
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				+try { 
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				+children=_st(self._allNodes())._select_((function(each){ 
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				+return smalltalk.withContext(function($ctx2) { 
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				+return _st(_st(each)._isNavigationNode())._and_((function(){ 
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				+return smalltalk.withContext(function($ctx3) { 
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				+return _st(each)._inPosition_(aPoint); 
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				+}, function($ctx3) {$ctx3.fillBlock({},$ctx2,2)})})); 
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				+}, function($ctx2) {$ctx2.fillBlock({each:each},$ctx1,1)})})); 
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				+_st(children)._ifEmpty_((function(){ 
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				+return smalltalk.withContext(function($ctx2) { 
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				+$1=_st(aBlock)._value(); 
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				+throw $early=[$1]; 
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				+}, function($ctx2) {$ctx2.fillBlock({},$ctx1,3)})})); 
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				+$2=_st(_st(_st(children)._asArray())._sort_((function(a,b){ 
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				+return smalltalk.withContext(function($ctx2) { 
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				+$4=_st(a)._positionStart(); 
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				+$ctx2.sendIdx["positionStart"]=1; 
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				+$3=_st($4)._dist_(aPoint); 
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				+$ctx2.sendIdx["dist:"]=1; 
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				+return _st($3).__lt_eq(_st(_st(b)._positionStart())._dist_(aPoint)); 
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				+}, function($ctx2) {$ctx2.fillBlock({a:a,b:b},$ctx1,4)})})))._first(); 
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				+return $2; 
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				+} 
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				+catch(e) {if(e===$early)return e[0]; throw e} 
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				+}, function($ctx1) {$ctx1.fill(self,"navigationNodeAt:ifAbsent:",{aPoint:aPoint,aBlock:aBlock,children:children},globals.Node)})}, 
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				+args: ["aPoint", "aBlock"], 
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				+source: "navigationNodeAt: aPoint ifAbsent: aBlock\x0a\x09\x22Answer the navigation node in the receiver's tree at aPoint \x0a\x09or nil if no navigation node was found.\x0a\x09\x0a\x09See `node >> isNaviationNode`\x22\x0a\x09\x0a\x09| children |\x0a\x09\x0a\x09children := self allNodes select: [ :each | \x0a\x09\x09each isNavigationNode and: [ each inPosition: aPoint ] ].\x0a\x09\x0a\x09children ifEmpty: [ ^ aBlock value ].\x0a\x09\x0a\x09^ (children asArray sort: [ :a :b | \x0a\x09\x09(a positionStart dist: aPoint) <= \x0a\x09\x09(b positionStart dist: aPoint) ]) first", 
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				+messageSends: ["select:", "allNodes", "and:", "isNavigationNode", "inPosition:", "ifEmpty:", "value", "first", "sort:", "asArray", "<=", "dist:", "positionStart"], 
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				+referencedClasses: [] 
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				+}), 
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				+globals.Node); 
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				+ 
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				 smalltalk.addMethod( 
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				 smalltalk.method({ 
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				 selector: "nextChild", 
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