Mexica, putting them in parity to the Tenochca Mexica. As the reigning Tenocha Mexica suppressed the identity of the Tlatelolca Mexica from 1473, this would not have been possible under the Aztec Empire. The second segment recounts the history of the Aztec Empire, depicting the reigns of each of its tlatoani in two-page spreads. The third segment details the Conquest and breaks with the traditional format of displaying the time and place of important events and only depicts the events themselves. This segment is thought to have once numbered, with the fourth, four two-page spreads. The final segment displays earlier colonial Mexican history and is broken into vertical columns that run from left to right. The glosses, in alphabetic Nahuatl, appear mostly in the migration segment to describe places and characters, though they occasionally help translate the year glyphs for readers not familiar with pre-Conquest Aztec writing. These glosses appear in small number in the Imperial segment, and then never again. Migration segment This segment has, unlike earlier manuscripts such as the Boturini Codex, depictions of the migration, such as their stops at sources of fresh water, getting lost, building temples, and attacks by wild animals. The tlacuiloque record every year of the migration, grouping year blocks to designate the amount of time spent at a location. Aztlán, as it is depicted in Codex Azcatitlan, strongly asserts the role of the Tlatelolca in the history of the Mexica. The island city is shown divided in two parts, like Tenochtitlan and Tlateloco. It is also shown with four "house" glyphs, referencing Tenochtitlan's four neighborhoods. The hill upon the island may also be a reference to Tlateloca; Aztlán's crest (a reed above some flowing water) is not present on the hill itself but rather atop a temple, and the words that make up Tlateloco's name (, land; , hill; -co, locative suffix) best describe this view of Aztlán. The first page of the codex, folio 1 recto (1r), shows the three rulers of the Triple Alliance, sitting upon European-style thrones in native dress and holding staves of office. Unlike earlier Aztec codices, areas of shadow are used to better define the faces on the page. The migration begins on the next page, folio 1 vecto (1v), with the departure of the Azteca from their island homeland Aztlán, as commanded by their god, Huitzilopochtli, who appears nearby as a warrior in a hummingbird