<snapdata remixID="8985902"><project name="U2L4-brickwall2.0" app="Snap! 5.1, http://snap.berkeley.edu" version="1"><notes></notes><thumbnail>data:image/png;base64,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</thumbnail><stage 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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="-199.99999999999272" y="-20.000000000000966" 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><comment x="1121" y="26" w="90" collapsed="false">Amy Feng Zhang&#xD;Xiaolan Liu.</comment><script x="10" y="110"><custom-block s="row B"></custom-block></script><script x="280.000001" y="74.80000100000001"><block s="gotoXY"><l>-100</l><l>0</l></block></script><script x="14" y="64"><custom-block s="row A"></custom-block></script><script x="20.333333333333485" y="180"><custom-block s="draw brick wall with %s row"><l>10</l></custom-block></script><script x="74" 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%s"><l>8</l><l>10</l><l>20</l><l>10</l><l>7</l></custom-block></script></scripts></sprite><watcher scope="Stage" s="reportMouseX" style="normal" x="10" y="10" 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;        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