The small number of examples on this page show only a few of the many typographic solutions which are possible with the 20 grid field.
The text can be set flush right and left, rough, to run ragged, or on a central axis. The white unprinted areas can acquire a particular optical and aesthetic importance in a printed work. If they are well planned, they can make the overall typographic pattern light, transparent and easily legible.
If printed matters is to look convincing, it must be designed on clear, functional lines and concentrate on essentials.
From Grid Systems in Graphic Design by Josef Muller-Brockmann