Glossary of vexillologyFlag 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.Basic patternsFlags often inherit traits seen in traditional European heraldry designs, and as a result, patterns often share names.NameIllustrationExampleCitation Vertical bisection Flag of AlgeriaHorizontal bisection Flag of IndonesiaDiagonal bisection Flag of Papua New GuineaDiagonal bisection Flag of BhutanPaleFlag of NigeriaVertical tricolor Flag of FranceFessFlag of AustriaHorizontal tricolor Flag of the NetherlandsBendFlag of Trinidad and TobagoBend sinisterFlag of the Republic of the CongoSideFlag of Pakistan-Side sinisterFlag of the first three Saudi states, 1744-1913ChiefFlag of New BrunswickBaseFlag of RwandaQuadrisection Flag of PanamaDiagonal quadrisection Flag of JamaicaGreek (Hellenic) crossFlag of SwitzerlandSymmetric crossFlag of EnglandNordic crossFlag of SwedenSaltireFlag of ScotlandCantonFlag of TaiwanBorderFlag of MontenegroBordureFlag of MaldivesPileFlag of the Czech RepublicPile throughoutFlag of EritreaChevron Flag of NAVAPallFlag of South AfricaArrowheadFlag of GuyanaGussetFlag of JubalandStripesFlag of CataloniaTechniques in flag displayIllustrationsFlag illustrations generally depict flags flying from the observer's point of view from left to right, the view known as the obverse ; the other side is the reverse. 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.