Markdown专题研究_Block系列 4/6： HorizontalRules

HORIZONTAL RULES

---

You can produce a horizontal rule tag (

---

) by placing three or more hyphens, asterisks, or underscores on a line by themselves. If you wish, you may use spaces between the hyphens or asterisks. Each of the following lines will produce a horizontal rule:
使用三个甚至更多的 星号/下划线 就可以产生一条水平线，并且他们中间可以加入空格

* * *

***

*****

- - -

---------------------------------------

---

---

---

---

---