<snapdata remixID="8928366"><project name="U2L4-checkerboard_SV" 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" 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0wr4gP72B+yCa0vAj18TiGkXcASciyvgA/YKuCHz49cEWnr7/rmA23wn0wr4gP72B+yCa0vAj18TiGkXcASciyvgA/YKuCHz49cEWnr7/rmA23wn0wr4gP72B+yCa0vAj18TiGkXcASciyvgA/YKuCHz49cEWnr7/rmA23wn0wr4gP72B+yCa0vAj18TiGkXcASciyvgA/YKuCHz49cEWnr7/rmA23wn0wr4gP72B+yCa0vAj18TiGkXcASciyvgA/YKuCHz49cEWnr7/rmA23wn0wr4gP72B+yCa0vAj18TiGkXcASciyvgA/YKuCHz49cEWnr7/rmA23wn0wr4gP72B+yCa0vAj18TiGkXcASciyvgA/YKuCHz49cEWnr7/rmA23wn0wr4gP72B+yCa0vAj18TiGkXcASciyvgA/YKuCHz49cEWnr7/rmA23wn0wr4gP72B+yCa0vAj18TiGkXcASci19FAf+nu5f/Nkf4H3/zf//Of/6n//nad//1P/7kzCf+1//99J/+x78/W/v7+LW94Hfdfv//r7vzb0//uf2V0hMCV1HAE3C+kwABAgQIFAEFXPRkCRAgQIDACwoo4BeEEyNAgAABAkVAARc9WQIECBAg8IICCvgF4cQIECBAgEARUMBFT5YAAQIECLyggAJ+QTgxAgQIECBQBBRw0ZMlQIAAAQIvKKCAXxBOjAABAgQIFAEFXPRkCRAgQIDACwr8P19pTO4J/adMAAAAAElFTkSuQmCC</pentrails><costumes><list 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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 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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 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