> # Output
> 1 + 2
[1] 3

> invisible(1:10)
> 12345678 + 12345678 + 12345678 + 12345678 + 12345678 + 12345678 + 12345678 +
+   12345678 + 12345678 + 12345678 + 12345678
[1] 135802458


Header
======

> # Other output
> letters
 [1] "a" "b" "c" "d" "e" "f" "g" "h" "i" "j" "k" "l" "m" "n" "o" "p" "q" "r" "s"
[20] "t" "u" "v" "w" "x" "y" "z"