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")
