<snapdata remixID="10819118"><project name="L09 Brick Wall" app="Snap! 6, https://snap.berkeley.edu" version="1"><notes></notes><thumbnail>data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAKAAAAB4CAYAAAB1ovlvAAAAAXNSR0IArs4c6QAABThJREFUeF7tnc1LVGEUh49QLQyp/fg/uBTdtWhvu0KUDMJF5KL+A/e1aF3QB0XhJiLKFCwICpeuEioJyowQo01RERNjtSjG8XfEO793nGfWx3ten/vc9+Oc69hTr9frwQcCJgI9CGgiT9pNAgiICFYCCGjFT3IExAErAQS04ic5AuKAlQACWvGTHAFxwEoAAa34SY6AOGAlgIBW/CRHQBywEkBAK36SIyAOWAkgoBU/yREQB6wEENCKn+QIiANWAghoxU9yBMQBKwEEtOInOQLigJUAAlrxkxwBccBKAAGt+EmOgDhgJYCAVvwkR0AcsBJAQCt+kiMgDlgJIKAVP8kREAesBBDQip/kCIgDVgIIaMVPcgTEASsBBLTiJzkC4oCVAAJa8ZMcAXHASgABrfhJjoA4YCWAgFb8JEdAHLASQEArfpIjIA5YCSCgFT/JERAHrAQQ0Iqf5AiIA1YCCGjFT3IExAErAQS04ic5AuKAlQACWvGTHAFxwEoAAa34SZ4S8N2zpVh9vrQttdrQQPQPD0Q2fvHC9W2v3QgYPD+evnaVY5EGTVBTAikBG4IsXryxLcrBc2ObkmTjL9WObnvtRsDU6nz62lWORRo0QQiYeXgyDwNu7ZxAagbMLmPZeJbgnd/ITv3JlICd+ksy7nIJyAI2m51KOwxkZ9xsvDpDN7vd3cZKVV4WsNmeqLTDQPagkY1X94XN4HcbKwRsQaDqUzoCjqv+hTwDsgQPbJZ+dvphCW5OThZwp+D5OQi0IpASMLtpz8arM0xJswkHjuYrQ+MeKZ+UgNlNezZe3eSXtKFnvzceWx1QEbDRN664LYiAbRQwu6Rm41mC9Rc9SmdVyRKsTKnEQCBDQN4DUoahDJN5FU+VUBaQTkjzvY4KuqSDUzvGonJBwMT7jeopnYOJVoJpcJIFZAlmCbYuweqUShwEMgTkGbBx0WxZJRtfemlBBVtSp8Y1lkrKMNnORjZe3WO1YxOtjoX9XhsL0VmhsvHqTUdA/UTuYtXIq3xYgv+j9PdPStXtAC8jtPFlBMVoYiCQISDPgJRhKMNYyzB0QvR9FweTCgrRCIiAmT/sV5dhluDEd91wMNFfF9t1AdULEgeBDAF5BqQTomN1dR9KKgnRCflzN3gl3/NNYpUUorOdjWw8nRD9q+9KZ1WJgNmXC7Lx6ia/pCWupGWvpLFUsgTruyAiIaARkA8hdELohNAJafFQud760J7z8r5WOLs/z8arXOQZkE4InRA6IS0eKw4m+hahHax2fQZUL0gcBDIE5CWYToiOtR0zTOklq0rKMNmNaDa+9OKqqmBJByLXWCopRGeFysYjIJ2Qlg95trORjS99WVFnQJbg3/9OTfmk9oDKBYmBQIaALCCdEL3MUVJP1jUWVUJZQArRFKKthWgERECrgCzBLMHWlxHUNZ04CGQIyHtAOiE6VsowFZVhsoXlbDyFaArRLR/zrFDZeAREQDohQwPRP8yBI3Pg2OqAqmxaUntA5YJ7JWbh6kxsfPgYQ2MjUavV9sqvVdzvIQvYbWWY+oF98eTy7ehd/xrL3zZi5MxErB3qidGpyVi5/zQ+vX67eTPVnmdxd76QAckCdmMhum/8SLy4ci/69/f9c7teHfwRJyYn4uH8XEzP3izkVnbmMBCwxf8J2UrAlb6fcfz0yXjwaDam52515p0vZNSygN25BN+J3vUvsfx9I46dORVrh3ti9OxkvLz7OD6/ec8SvAsSywLuQq6OusTCtZnYWOMQUvVNQ8CqCXP9lgQQEEGsBH4BiP9rTeDdExgAAAAASUVORK5CYII=</thumbnail><stage name="Stage" width="480" height="360" costume="0" color="255,255,255,1" tempo="60" threadsafe="false" penlog="false" volume="100" pan="0" lines="flat" ternary="true" hyperops="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="0" y="-165" 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="376.33333333333337" y="23.166666666666657"><block s="clear"></block><block s="gotoXY"><l>0</l><l>0</l></block></script><script x="30" y="35.09999999999994"><custom-block s="rowA"></custom-block><block s="turnLeft"><l>180</l></block><block s="changeYPosition"><l>-15</l></block><custom-block s="rowB (2)"></custom-block></script><script x="200" y="179.8333333333334"><custom-block s="even? %n"><l>10</l></custom-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 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