$x = 1
$y = 2
notice ($x == $y)
notice ($x > $y)
notice ($x < $y)
notice ($x != $y)
notice (($x > $y) or ($x < $y))
notice (($x > $y) and ($x < $y))
notice ("x < y and ! x < y",($x < $y) and !($x < $y))
notice ("with bang",!($x > $y))
notice ("hello",!($x < $y))

notice ($x)

