Level 2 is the doing. After reading the Prelude and Level 1, you should be able to go to any part of Levels 2 or 3 according to personal tastes or interests. Go straight to the formulae, tabulated by geometry, cross-referenced by equation numbers not only to Level 1's introduction but also to Level 2's explanatory essays and to the derivations of Level 3. The idea is to work outward from these tables—back to Level 1 or forward to Levels 2 and 3.

The opening Notation section, Section L2.1, applies not only to the tables but also to the texts of Levels 1 and 2. The Essays on formulae section, Section L2.3, which immediately follows the tables sections, reduces the results from Level 3 derivations to simpler forms. The Computation section, Section L2.4, sketches the physical foundations of the all-important dielectric-response functions and gives mathematical guidelines for calculation.

The sequence of tabulation is first to give the most exact expression available, and then to list approximations.