Macro- versus microtypography:

While macrotypography—the typographic layout—is concerned with the format of the printed matter, with the size and position of the columns of text and illustrations, with the organization of the hierarchy of headings, subheadings and captions, detail typography is concerned with the individual components—letters, letterspacing, words, wordspacing, lines and linespacing, columns of text. These are the components that graphic or typographic designers like to neglect, as they fall outside the area that is normally regarded as “creative.”

Hochuli, Detail In Typography, page 7

A well-designed text will seem weightless after a time; the initial feel of the book fades away as the mind becomes engrossed in the words. Any shiver in the page—a bad break, a too-long measure, a space too wide or narrow—and the book will press into the reader’s hand and tug at the lids of her eyes. It takes a designer who is also a reader to be be attentive to the ways by which the page becomes a burden to the words.