Flag terminology is the nomenclature, or system of terms, used in vexillology, the study of flags, to describe precisely the parts, patterns, and other attributes of flags and their display.Main article: BanderoleMain article: BannerMain article: BurgeeMain article: Civil ensignMain article: Civil flagMain article: Military colours, standards and guidonsMain article: Football pitch § Pitch boundaryMain article: Maritime flag § Courtesy flagMain article: EnsignMain article: FanionMain article: GonfalonMain article: Military colours, standards and guidonsMain article: Jack (flag)Main article: National flagMain article: PennonMain article: Pipe bannerMain article: Prayer flagMain article: Maritime flag § Rank flagsMain article: Flag signalsMain article: Heraldic flag § Heraldic standardMain article: State flagMain article: VexilloidMain article: VexillumMain article: War flagMain article: WindsockMain article: Canton (flag)Main article: Flag § Hoisting the flagFlags often inherit traits seen in traditional European heraldry designs, and as a result, patterns often share names.Main article: Half-mastFlag illustrations generally depict flags flying from the observer's point of view from left to right, the view known as the obverse (or "front"); the other side is the reverse (or "back").There are some exceptions, notably some Islamic flags inscribed in Arabic, which is written from right to left; for these the obverse is defined as the side with the hoist to the observer's right.