At this point, you have a fully functional map pulling data in from multiple sources, including default functionality to pan with the mouse and zoom in and out with the mouse wheel.

此时，您就拥有了一个完全可以发挥作用的地图，可从多个资源拉入数据，包括默认的用鼠标平移以及用鼠标滑轮缩放的功能。

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Digital zoom with the mouse scroll wheel, and drag to scroll the recording window.

通过鼠标的滑动可以进行数码变焦，也可以拖拉滚动条来控制录制的窗口。

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You can zoom in or out of a diagram by pressing the Ctrl key while moving the mouse wheel.

您可以在移动鼠标滚轮的同时，通过按ctrl键来放大或者缩小图表。

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In our hands-on demo, we stared at a world map, and then used the scroll wheel on a mouse to zoom in on that particular country.

ENGADGET: Hands-on with Tobii REX, a peripheral that brings eye-tracking to any Windows 8 PC (video)