😁选择框图菜单，在产品的”内部“或”外部“点击鼠标右键，添加”下级产品“或”外部对象“
😁添加完成后如下图：可在内容上，点击鼠标右键，继续添加、修改、删除
🧐小技巧：当布局太乱时，点击” 重置布局 “按钮
最重要的事：离开框图页面前，一定、一定、一定要保存！！！
😊选中内容后点 鼠标右键，调出命令环，添加上级或下级产品
😍鼠标放置左侧BOM上，点击右键 添加下级产品
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