要创建蒙版，需点击图层面板下添加矢量蒙版按钮。
To create the mask click on the Add vector mask button at the bottom of the Layers Panel.
Rational Functional Tester 基础版的安装仅仅使用坐标的点击就可以操作这些控件，但是不能从这些控件中抽取数据。
The basic Rational Functional Tester installation would be able to navigate these controls only with coordinate-based clicks and would not be able to extract data from them.
右键点击图片图层，选择创建剪切蒙版。
Now right click on Image_layer and choose "Create Clipping Mask".
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