- 添加图片，然后给每个要找的物体画一个框。
拖动模块可移动位置。从圆点拖到另一个模块即可连接，拖到空白处松开可添加模块。右键点击模块或连线可查看更多选项。选中后按 Delete 键删除。
Press enter or space to select a node. You can then use the arrow keys to move the node around. Press delete to remove it and escape to cancel.
Press enter or space to select an edge. You can then press delete to remove it or escape to cancel.