6 / 6
Set without leading, words crowd each other and the eye cannot keep its line.
6 / 9
With three points of leading, the page begins to breathe — about right for serious reading.
6 / 12
Too much air, and the reader sails between the lines instead of along them.
fig. 2 b Leading demonstration. Posts are set at 1.65× the type size.
Letterspacing demonstration
Tight — for display
Normal — for setting
Open — for headlines
Tracked
fig. 2 c Four states of horizontal type-set. Section heads use tracking only.