bing()
Search Bing
crossref()
Find DOI's and other bibliographic metadata
duckduckgo() ddg()
duckduckgo()
ddg()
Search Duckduckgo
github()
Search GitHub
google()
Search Google
google_scholar()
Search Google Scholar
qwant()
Search Qwant
r_bloggers()
Search r-bloggers.com
rdocumentation() rdoc()
rdocumentation()
rdoc()
Search rdocumentation.org
rdrr_io() rdrr()
rdrr_io()
rdrr()
Search rdrr.io
reddit()
Search Reddit
stackoverflow() so()
stackoverflow()
so()
Search Stackoverflow
twitter()
Search Twitter
web()
Access Domain
wikipedia() wp()
wikipedia()
wp()
Search Wikipedia
wolframalpha() wolfram()
wolframalpha()
wolfram()
Search WolframAlpha