<snapdata remixID="9218468"><project name="Brick wall_JeanNeil" app="Snap! 5.4, 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" penlog="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="-103" y="-84" heading="90" scale="1" volume="100" pan="0" rotation="1" draggable="true" costume="0" color="163,0,61,1" 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="62" y="230"><custom-block s="Row B: Number of bricks: %n Length: %n Width: %n Gap Thickness: %n"><l></l><l></l><l></l><l></l></custom-block></script><script x="58" y="303"><custom-block s="Row A: Number of Bricks: %n Length: %n Width: %n Gap Thickness: %n"><l></l><l></l><l></l><l></l></custom-block></script><script x="78" y="127.00000000000011"><custom-block s="draw a Brick Wall with %n Rows. With Bricks per Row: %n . Of brick length: %n Width: %n Gap Thickness: %n"><l>6</l><l>12</l><l>40</l><l>20</l><l>6</l></custom-block></script><script x="373" y="439"><custom-block s="draw brick, length: %n width: %n"><l></l><l></l></custom-block></script><script x="594" y="474"><custom-block s="draw brick, length: %n width: %n"><l></l><l></l></custom-block></script><script x="575" y="311"><block s="receiveCondition"><l/></block></script><script x="493" y="346"><block s="reportTouchingColor"><color>145,26,68,1</color></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; 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