{
  string: "this is a string"
  symbol: Symbol
  int: 17
  real: 42.2
  int + int: (10 + 10)
  int - int: (3 - 127)
  int / int: (10 / 2)
  real / real: (5 / 2)
  real * real: (5.1 * 8.7)
  int + real: (5 + 8.7)
  real + int: (8.7 + 5)
  exp: DEFAULT_FONT_FAMILY
  Xsize: size
  dim: <10 inch>
  int + dim: (5 + <25 inch>)
  dim + int: (<25 inch> + 5)
  dim + dim: (<25 point> + <5 inch>)
  real * dim: (2.2 * <11 point>)
  dim * real: (<11 point> * 2.1)
  dim / real: (<11 point> / 2)
  real / dim: (11 / <2 point>)
  dim * int: (<11 point> * 2)
  int * dim: (2 * <11 point>)
  dim / int: (<11 point> / 2)
  int / dim: (22 / <11 point>)
  int - dim: (2 - <11 point>)
  dim - int: (<11 point> - 2)
}

{
  string: "this is a string"
  symbol: Symbol
  int: 17
  real: 42.2
  int + int: 20
  int - int: -124
  int / int: 5
  real / real: 2.5
  real * real: 44.37
  int + real: 13.7
  real + int: 13.7
  exp: "helvetica"
  Xsize: 10
  dim: <10 inch>
  int + dim: <30 inch>
  dim + int: <30 inch>
  dim + dim: <5.34722 inch>
  real * dim: <24.2 point>
  dim * real: <23.1 point>
  dim / real: <5.5 point>
  real / dim: <5.5 point>
  dim * int: <22 point>
  int * dim: <22 point>
  dim / int: <5.5 point>
  int / dim: <2 point>
  int - dim: <-9 point>
  dim - int: <9 point>
}

DEFAULT_FONT_FAMILY	"helvetica"


(10 + 10)
<<72 point> inch>
1