godarda@gd:~$ R
...
> "GoDarda"
[1] "GoDarda"

> print("Hello World")
[1] "Hello World"

> cat("Hello World\n")
Hello World

> length("GoDarda")
[1] 1

> nchar("GoDarda")
[1] 12

> toupper("GoDarda")
[1] "KODINGWINDOW"

> tolower("KODINGWINDOW")
[1] "godarda"

> substring("GoDarda",7,12)
[1] "Window"

> paste("Koding","Window")
[1] "Koding Window"

> paste("Koding","Window",sep="")
[1] "GoDarda"

> paste("Koding","Window",sep="@@@")
[1] "Koding@@@Window"

> format("GoDarda",width=20)
[1] "GoDarda        "

> format("GoDarda",width=20,justify="")
Error in match.arg(justify) : 
  'arg' should be one of “left”, “right”, “centre”, “none”

> format("GoDarda",width=20,justify="l")
[1] "GoDarda        "

> format("GoDarda",width=20,justify="c")
[1] "    GoDarda    "

> format("GoDarda",width=20,justify="r")
[1] "        GoDarda"

> format("GoDarda",width=20,justify="n")
[1] "GoDarda"