Goshawks also remain a common motif in Azorean heraldry and vexillology. The subcommittee deals only with municipal heraldry and vexillology. The term is derived from the terminology of heraldry but mostly used in vexillology. The arts of vexillology and heraldry are closely related. The commission deals only with municipal heraldry and vexillology. Vexillology rarely distinguishes between gold and yellow; in heraldry, they are both "Or". The Finnish military vexillology is a mixture of Scandinavian and Russian tradition. A Congress consists of vexillology presentations, FIAV's General Assembly and flag display tours. The study of flags, or vexillology, was formalised by Whitney Smith in 1957. In vexillology, flags are described and displayed from the front (obverse). He was a founder of several vexillology organizations. It also includes Palestinian vexillology and signs used by the Palestinian National Authority. His debut studio album, "Get Scraped" was released in 2005, with follow-up "Vexillology" in 2006. Vexillology is the second studio album released by deadmau5.