<snapdata remixID="8714957"><project name="BWU2L4-Tic-Tac-Toe" app="Snap! 5.1, http://snap.berkeley.edu" version="1"><notes></notes><thumbnail>data:image/png;base64,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</thumbnail><stage name="Stage" width="480" height="360" costume="0" color="255,255,255,1" tempo="60" threadsafe="false" volume="100" pan="0" lines="flat" ternary="true" codify="false" inheritance="false" sublistIDs="false" scheduled="false" id="1"><pentrails>data:image/png;base64,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</pentrails><costumes><list struct="atomic" id="2"></list></costumes><sounds><list struct="atomic" id="3"></list></sounds><variables></variables><blocks></blocks><scripts></scripts><sprites><sprite name="Sprite" idx="1" x="-100" y="-30" heading="90" scale="1" volume="100" pan="0" rotation="1" draggable="true" costume="0" color="145,26,68,1" pen="tip" id="8"><costumes><list struct="atomic" id="9"></list></costumes><sounds><list struct="atomic" id="10"></list></sounds><blocks></blocks><variables></variables><scripts><script x="25" y="48"><block s="clear"></block><custom-block s="draw brick wall with %n rows"><l>7</l></custom-block></script><script x="628" y="107"><block s="doIfElse"><custom-block s="even? %n"><block var="number"/></custom-block><script><block s="doRepeat"><block var="number"/><script><custom-block s="rowA"></custom-block><block s="changeYPosition"><l>-15</l></block><block s="changeXPosition"><l>-205</l></block><custom-block s="rowB"></custom-block></script></block></script><script><block s="doRepeat"><block s="reportDifference"><block var="number"/><l>1</l></block><script><custom-block s="rowA"></custom-block><block s="changeYPosition"><l>15</l></block><block s="changeXPosition"><l>-205</l></block><custom-block s="rowB"></custom-block></script></block><block s="changeYPosition"><l>15</l></block><block s="changeXPosition"><l>-205</l></block><custom-block s="rowA"></custom-block></script></block></script></scripts></sprite><watcher scope="Sprite" s="xPosition" style="normal" x="10" y="10" color="74,108,212" hidden="true"/><watcher scope="Stage" s="reportMouseX" style="normal" x="10" y="31.000001999999995" color="4,148,220"/></sprites></stage><hidden></hidden><headers></headers><code></code><blocks><block-definition s="set flag %&apos;which&apos; to %&apos;tf&apos;" type="command" category="sensing"><header></header><code></code><translations></translations><inputs><input type="%s" readonly="true"><options>Presentation mode&#xD;Retina display support&#xD;Long form input dialog&#xD;Plain prototype labels&#xD;Input sliders&#xD;Execute on slider change&#xD;Clicking sound&#xD;Turbo mode&#xD;Flat design&#xD;Keyboard editing&#xD;Table support&#xD;Table lines&#xD;Visible stepping&#xD;Thread safe scripts&#xD;Prefer smooth animations&#xD;Flat line ends&#xD;Codification support&#xD;Inheritance support</options></input><input type="%b"></input></inputs><script><block s="doRun"><block s="reportJSFunction"><list><l>which</l><l>tf</l></list><l>var   stage = this.parentThatIsA(StageMorph),&#xD;        ide = stage.parentThatIsA(IDE_Morph),&#xD;        world = stage.parentThatIsA(WorldMorph);&#xD;&#xD;if (tf != !!tf) return;&#xD;&#xD;try{&#xD;ide.savingPreferences = false;&#xD;&#xD;switch (which) {&#xD;    case &apos;Presentation mode&apos;:&#xD;        if (tf != ide.isAppMode) ide.toggleAppMode();&#xD;        break;&#xD;    case &apos;Retina display support&apos;:&#xD;        if (tf != isRetinaEnabled()) ide.toggleRetina();&#xD;        break;&#xD;    case &apos;Long form input dialog&apos;:&#xD;        if (tf != InputSlotDialogMorph.prototype.isLaunchingExpanded)&#xD;            ide.toggleLongFormInputDialog();&#xD;        break;&#xD;    case &apos;Plain prototype labels&apos;:&#xD;        if (tf != BlockLabelPlaceHolderMorph.prototype.plainLabel)&#xD;            ide.togglePlainPrototypeLabels();&#xD;        break;&#xD;    case &apos;Input sliders&apos;:&#xD;        MorphicPreferences.useSliderForInput = tf;&#xD;        break;&#xD;    case &apos;Execute on slider change&apos;:&#xD;        ArgMorph.prototype.executeOnSliderEdit = tf;&#xD;        break;&#xD;    case &apos;Clicking sound&apos;:&#xD;        if (tf != !!BlockMorph.prototype.snapSound)&#xD;            BlockMorph.prototype.toggleSnapSound();&#xD;        break;&#xD;    case &apos;Turbo mode&apos;:&#xD;        if (tf != stage.isFastTracked)&#xD;            ide.toggleFastTracking();&#xD;        break;&#xD;    case &apos;Flat design&apos;:&#xD;        if (tf == MorphicPreferences.isFlat) break;&#xD;        if (tf)&#xD;            ide.flatDesign();&#xD;        else&#xD;            ide.defaultDesign();&#xD;        break;&#xD;    case &apos;Keyboard editing&apos;:&#xD;            ScriptsMorph.prototype.enableKeyboard = tf;&#xD;        break;&#xD;    case &apos;Table support&apos;:&#xD;            List.prototype.enableTables = tf;&#xD;        break;&#xD;    case &apos;Table lines&apos;:&#xD;                TableMorph.prototype.highContrast = tf;&#xD;        break;&#xD;    case &apos;Visible stepping&apos;:&#xD;        if (tf != Process.prototype.enableSingleStepping)&#xD;            ide.toggleSingleStepping();&#xD;        break;&#xD;    case &apos;Thread safe scripts&apos;:&#xD;        stage.isThreadSafe = tf;&#xD;        break;&#xD;    case &apos;Prefer smooth animations&apos;:&#xD;        if (tf != (StageMorph.prototype.frameRate &gt; 0))&#xD;            ide.toggleVariableFrameRate();&#xD;        break;&#xD;    case &apos;Flat line ends&apos;:&#xD;        SpriteMorph.prototype.useFlatLineEnds = tf;&#xD;        break;&#xD;    case &apos;Codification support&apos;:&#xD;        if (tf != StageMorph.prototype.enableCodeMapping) {&#xD;            StageMorph.prototype.enableCodeMapping = tf;&#xD;            ide.currentSprite.blocksCache.variables = null;&#xD;            ide.currentSprite.paletteCache.variables = null;&#xD;            ide.refreshPalette();&#xD;        }&#xD;        break;&#xD;    case &apos;Inheritance support&apos;:&#xD;        if (tf != StageMorph.prototype.enableInheritance) {&#xD;            StageMorph.prototype.enableInheritance = tf;&#xD;            ide.currentSprite.blocksCache.variables = null;&#xD;            ide.currentSprite.paletteCache.variables = null;&#xD;            ide.refreshPalette();&#xD;        }&#xD;        break;&#xD;};&#xD;}&#xD;finally {&#xD;ide.savingPreferences = false;&#xD;};&#xD;</l></block><list><block var="which"/><block var="tf"/></list></block></script></block-definition><block-definition 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