• Go to the latest release page and download the extension.zip, then install it to Chrome or Edge by hand.
• 去版本发布页面下载 extension.zip 文件，然后手动安装到谷歌或微软 Edge 浏览器。

也可以通过坚果云下载：https://www.jianguoyun.com/p/Dde3c80Q6uuVCBj4s7oD

Input keyword r in the address bar, press Space to activate the search bar. Then enter any word you want to search, the extension will response the related search results instantly.

输入关键字 r，然后敲入一个空格，接着输入想要查询的文档或包，浏览器会自动跳转到搜索页面。

• r<space>keywords responds to all searches, searching docs/packages is selected at default.
• r<space>!keywords searches only R packages.
• r<space>?keywords searches r tagged QAs on Stack Overflow.
• r<space>?all<space>keywords searches all QAs on Stack Overflow.
• r<space>?bio<space>keywords searches all QAs on Biostars.
• r<space>?cmd<space>keywords searches command (e.g. echo) docs on https://tldr.ostera.io/.
• r<space>/keywords searches posts on 微信.
• r<space>/cmd<space>keywords searches linux command on linux 命令大全.
• r<space>/zh<space>keywords searches posts on 知乎.
• r<space>/sf<space>keywords searches posts on 思否.
• r<space>/sh<space>PMID/URL/DOI searches paper on Sci-Hub using https://sci-hub.se/. If this service is down, please go to https://tool.yovisun.com/scihub/ see working URLs.
• r<space>:help shows all available commands.

Note that Edge can only show 7 search items, to see all available commands, please see help (r<space>:help) command.

• https://rdrr.io/
• huhu