1.打开R的帮助手册

> help.start()
# Help目录下->R help

2.函数、包等的帮助信息

> help(sum)
> help(package=ggplot2)

3.函数参数

> args(sum)
function (..., na.rm = FALSE) 
NULL

4.函数示例

> example(sum)

sum> ## Pass a vector to sum, and it will add the elements together.
sum> sum(1:5)
[1] 15

5.demo

demo(graphics)

6. vignette()

# 清晰展示人物特征、局势等的)短文，简介，花絮; (表演)片段，小品; (尤指书名页上的)小花饰，小插图;

7. help.search()

help.search() = ??

8.模糊搜索

apropos("sum")