# Parentheses the grouping doesn't need, written because the reader does.
# Precedence puts every operator into one order, but only part of that order is
# common knowledge, so an operand whose grouping rests on the rest of it is
# written out.
func main()
    a := yes
    b := no
    c := yes
    x := 12
    y := 5
    z := 3

    # Arithmetic inside arithmetic reads off the page, and so does arithmetic
    # inside a comparison and a comparison inside `and`/`or`/`xor`. These keep
    # the parentheses they don't have:
    >> x + y*z
    >> x*y + z
    >> x + y*z == x and y < z
    >> a and x == y
    >> -x + y
    # ...and a comparison is the one place `++` reads like arithmetic too:
    >> "a" ++ "b" == "ab"

    # A repetition of one operator groups the same way whichever way it is
    # read, however murky the operator:
    >> a and b and c
    >> x _min_ y _min_ z
    >> x << y << z

    # Two different bitwise operators do not. `and`, `or` and `xor` bind
    # equally tightly and group to the left, which is not something to make a
    # reader look up:
    >> a and b or c
    >> a or b and c
    >> a xor b or c

    # Neither does where a shift sits against arithmetic, or against the
    # bitwise operators:
    >> x + y << z
    >> x << y + z
    >> x << y >> z
    >> x and y << z

    # Nor `_min_` against `_max_`, or against the arithmetic it absorbs:
    >> x _min_ y _max_ z
    >> x*y _min_ z

    # Nor one comparison inside another:
    >> (x == y) == (y == z)

    # A parenthesized operand is a fresh expression: it settles its own
    # spacing rather than inheriting the one around it.
    >> x*y and (y + z)