For Otlet, one of the major advantages of the UDC over alphabetical systemswas that “every alphabetical filing scheme has, through the arbitrariness of thechoice of words, a personal character, whereas the [U]DC has an impersonaland universal character” [6, p. 380].

Alexander would also step away from the notion of a semantic network and more toward the pursuit of the geometrics of order.

Heading hierarchy. Don't skip heading levels. In order to solve this problem, you need to separate the semantics from the style.