Getting help reference card

Adapted from Tom Short’s R Reference Card

Command	Purpose
`help(topic)`	documentation on topic
`?topic`	the same as help(‘topic’)1)
`help.search(‘topic’)`	Search topic on the local help system
`??topic`	the same as help.search(‘topic’)
`RSiteSearch(‘topic’)`	Search topic on http://search.r-project.org (needs an internet connection)
`apropos(‘topic’)`	The names of the objects in the search list matching the regular expression `topic`
`help.start()`	Start the HTML version of help
`findFn(’topic’)`	In the `sos` package. Provides a powerful R interface to `RSiteSearch()` that returns results within R in a data frame. Searches all packages, not just locally installed ones. See http://journal.r-project.org/archive/2009-2/RJournal_2009-2_Graves~et~al.pdf

1) When dealing with special characters, and you are not working inside ESS, you have to enclose topic in quotes : ?”?” , ?”[[”

Getting Started