BEGIN {

	x = y = "s"

	a = (getline x y)

	print a, x

	a = (getline x + 1)

	print a, x

	a = (getline x - 2)

	print a, x

	cmd = "echo A"

	a = (cmd | getline x y)

	close(cmd)

	print a, x

	cmd = "echo B"

	a = (cmd | getline x + 1)

	close(cmd)

	print a, x

	cmd = "echo C"

	a = (cmd | getline x - 2)

	close(cmd)

	print a, x

	cmd = "echo D"

	a = cmd | getline x

	close(cmd)

	print a, x

	# Concatenation has higher precedence than IO.

	"echo " "date" | getline

	print

}