Sections then called "Tale" are Digressions, and those called "Digression" are also Digressions. Sharma notes "dignity, elegance, clearness, brevity and avoidance of digression and controversies mark his style". There is then a digression to the subject of theological epistemology. A "schizothemia" is a digression by means of a long reminiscence. He had a brief digression into a Futurist style in 1914. "Beowulf" preserves existing medieval dragon-lore, most notably in the extended digression recounting the Sigurd/Fafnir tale. The digression was also used for non-satiric purposes in fiction. Schumacher in a digression from his main argument discusses the nature and importance of art. Its style is marked by digression, double entendre, and graphic devices. The "Marvels" is a lengthy digression inserted into books 8 and 9. The last three chapters are a digression on what God's goodness might entail. The movie, however, avoids this digression, and maintains a constant setting. "Pratidwandi" (1972) helped pioneer photo-negative flashback and X-ray digression techniques. In a digression he introduced and studied lattices formally in a general context. A digression is that the self-diffusion coefficient of Boned et al.