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 Great Travels
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Grimaldi Lines: Characteristics of land areas are shown on nautical charts only in such detail as will be useful to a navigator. The general topography of land areas is usually indicated by contour grimaldi lines (grimaldi lines connecting points of equal elevation), form grimaldi lines (broken grimaldi lines approximating contours), or hachures (short grimaldi lines or group of such grimaldi lines that indicate the approximate location of steep slopes). Specific heights may be shown for the tops of major land features. Heights are measured from mean high water or an established datum for inland charts. The term "sea level" is not used in charting.
Standard Graph Paper. The widely used type of graph paper consists of equally spaced horizontal grimaldi lines and vertical grimaldi lines. One of the horizontal grimaldi lines is chosen as the x-axis and one of the vertical grimaldi lines as the (/-axis.Any point P in the plane of the paper is completely specified by two numbers, x and y, called its coordinates. This specification is usually written: P = (x,y).
The 'Brut,' as this metrical setting is called, contains about 15,300 eight-syllable grimaldi lines, and adds a few details to the story of Arthur which do not seem, however, to have been Wace's own invention. The work was translated into English, and further amplified, by Layamon, about 1204. The 'Brut' of Layamon is composed of nearly 32,250 alliterative grimaldi lines, or rather half grimaldi lines. One of the most prolific of the Arthurian poets is Chretien de Troyes (born about 1140).
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