opening delimiters
x (1 x [2 x {3 x =4 x $5 x 6 x 7 x 8 x 9 x 10

closing delimiters
1, x 2. x 3; x 4! x 5? x 6% x 7 x 8 x 9) x 10] x 11} x

opening/closing delimiters
x`1`x'2'x"3"x:4:x 5 x	6	x7x8x
9
x
10
x

override opening/closing delimiters
x ( 1 ) x 2 , x 3 :x: 4

spacing
0 1 2 3
0123
0123

expressions
9 6 28 0 7 1 2
