In vexillology and heraldry, a Canadian pale is the centre of a flag that is a square or rectangle covering half the width of a flag rather than a rectangle covering a third as in a tricolour. It is named after the Canadian flag, which is the most prominent flag to have such a feature. No other national flag has a Canadian pale, but a number of sub-national and municipal flags use it, especially in Canada. For instance the cities of Cornwall, Ontario and Burlington, Ontario and the Canadian Northwest Territories all feature a Canadian pale on their flags. Vexillology is the study of flags. ... Heraldry is the science and art of describing coats-of-arms, also referred to as achievements or armorial bearings. ... A tricolour is a flag or banner having three colours, usually in approximately equal size (horizontally or vertically) and lacking additional symbols. ... Flag Ratio: 1:2 (1965-Present) The National Flag of Canada (), popularly known as the Maple Leaf Flag (French: lUnifoli the one-leaved), is a base red flag with a white square in its centre, featuring a red stylized 11-pointed maple leaf. ... A flag is a piece of cloth flown from a pole or mast, usually intended for signaling or identification. ... Cornwall (2001 population 45,640, metropolitan population 57,581) is a city in southeastern Ontario, Canada, located on the St. ... Burlington (2003 population 161,437) is located in the Golden Horseshoe, across the harbour from Hamilton, Ontario, Canada. ... A former territory in the United States is called Northwest Territory. ...