<snapdata remixID="8731385"><project name="U2L4-brickwall" 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="-96" y="-95" 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="479" y="142"><block s="doGotoObject"><l>Start</l></block><block s="clear"></block><custom-block s="draw Brick wall with %s rows"><l>7</l></custom-block></script></scripts></sprite><sprite name="Start" idx="2" x="-96" y="115" heading="90" scale="1" volume="100" pan="0" rotation="1" draggable="false" hidden="true" costume="0" color="175.95,73.899,0,1" pen="tip" id="19"><costumes><list struct="atomic" id="20"></list></costumes><sounds><list struct="atomic" id="21"></list></sounds><blocks></blocks><variables></variables><scripts></scripts></sprite></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;    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