[编辑连接线线条、箭头或点 - Visio - Microsoft Support](https://support.microsoft.com/zh-cn/office/%E7%BC%96%E8%BE%91%E8%BF%9E%E6%8E%A5%E7%BA%BF%E7%BA%BF%E6%9D%A1%E3%80%81%E7%AE%AD%E5%A4%B4%E6%88%96%E7%82%B9-5 ...