Graphviz 画图

shape=box

• https://itopic.org/graphviz.html

• https://www.cnblogs.com/billnote/p/4043267.html

• https://www.yuque.com/wangdd/blog/llkmi5

• https://www.yuque.com/yuque/help/graphviz

https://www.yuque.com/chenyunpeng-zkr3i/xedeha/hc4mq1