Theoretically, 12-point type is the same size as Pica (10 pitch) and
10-point the same size as Elite (12 pitch), but this is really true only if
you're using a monospaced font such as Courier New. To get typewriter line
spacing, set your paragraph line spacing to Exactly 12 points (single space,
6 lpi) or Exactly 24 points (double space, 3 lpi).