console.log("行号从5开始");
console.log("下一行是6");

def func():
    a = 1
    b = 2  # 高亮此行
    c = 3
    d = 4  # 高亮此行及下两行
    e = 5
    f = 6

<div>  两个空格  </div>
    → 一个制表符

• [x] Write the press release
• [ ] Update the website
• [ ] Contact the media