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Regrettably, R is a bit of it's own bizarro world, as far as how its commands work. (Futhermore, Googling "R" to get help can be very frustrating.) The conventions of most other programming and scripting languages seem to have been re-invented by someone who wanted to do everything their own way in R. Just like we wrote shell scripts in bash, you can write R scripts that carry out complicated analyses.
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They are the R prompt to remind you which commands you are running the inside of R! |
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