A torrent tracker is a piece of software which tracks Torrents. It will record the number of leechers, number of seeders, how large the torrent is, what files are contained in the torrent, and how many times the torrent has been downloaded. You can think of it like a statistics tracker for torrents.
The unit of the Maya writing system is the glyphic cartouche, which is equivalent to the words and sentences of a modern language. Maya cartouches included at least three or four glyphs and as many as fifty. Each cartouche contained various glyphs, as well as prefixes and suffixes. There is no Maya alphabet.
The principal architecture of the city consisted of palaces, pyramid-temples, ceremonial ballcourts, and structures aligned for astronomical observation. The Maya elite were literate, and developed a complex system of hieroglyphic writing that was the most advanced in the pre-Columbian Americas. The Maya recorded their history and ritual knowledge in screenfold books, of which only three uncontested examples remain, the rest having been destroyed by the Spanish.