Sacred or 'dream' book (temicamatl) - a condensed or ritualised version of reality which deals with fundamental human experiences. It is made from deer hide folded into 23 pages and covered in gesso and painted with pictograms. It is read right to left, on both sides.
It portrays a "map" of the cosmos, a series of gods, a calendar system known as day counts associated with the maize harvest, and long-distance traders (pochteca). Aside from its literary and artistic merit, it was used for education and to make assessments of the future.
The main focus of the Codex Fejervary Mayer is how and what to give as offerings and gifts known as tribute. Tribute was given in different forms, as goods or material supplied over the year (as shown on side 1 of the Codex), but also as free labour given over the 260-day (and night) gestation period known as the tonalamatl (this is shown on side 2). A great deal of attention is paid to the pochteca - the guild of people who travelled far to explore and collect.