Using the Rectangular Marquee Tool (m), make a selection at the bottom of your grassy area.

用矩形选框东西在草地底部画出一个矩形。

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Using the Rectangular Marquee Tool (M), fill a selection with white on a new layer as shown.

使用矩形选框工具（米），填充白色显示一个新的层中进行选择。

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Using the Rectangular Marquee Tool (m), make a selection underneath your navigation all the way down to the very bottom of the canvas.

用矩形选框东西在导航条下拉出一个矩形，直至第一部建立的图层底部。

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The developer then has permission to communicate with the device through the Google Cloud, using static, rectangular web pages called Cards, with images and text.

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