<snapdata remixID="8850099"><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="216" y="-225" heading="270" 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="37" y="94"><custom-block s="draw brick wall with %n rows"><l>5</l></custom-block></script><script x="462.000002" y="623.6333353333334"><custom-block s="rowA"></custom-block><block s="turnLeft"><l>180</l></block><block s="changeYPosition"><l>-15</l></block></script></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;            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 s="draw brick, length: %&apos;length&apos; width: %&apos;width&apos;" type="command" category="pen"><header></header><code></code><translations></translations><inputs><input type="%n"></input><input type="%n"></input></inputs><script><block s="setColor"><color>145,26,68,1</color></block><custom-block s="set flat line ends to %b"><block s="reportBoolean"><l><bool>true</bool></l></block></custom-block><block s="setSize"><block var="width"/></block><block s="down"></block><block s="forward"><block var="length"/></block><block s="up"></block></script></block-definition><block-definition s="set flat line ends to %&apos;flag&apos;" type="command" category="pen"><header></header><code></code><translations></translations><inputs><input type="%b"></input></inputs><script><custom-block s="set flag %s to 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