When you see the black arrow display on the left of the edge and the narrow bounding rectangle, as shown in figure 8, drop the component.
如图8所示，当看到左边缘上显示黑色箭头，并伴有狭长的外接矩形时，放下该组件。
The color of arrow display: red yellow and green. You can adjust the direction of the arrow.
红、黄、绿三色箭头图案单屏显示，箭头方向可任意调整。
The color of arrow display: red yellow and green. You can adjust the direction of the arrow.
红、黄、绿三色箭头图案单屏显示，箭头方向可任意调整。
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