1911 Encyclopædia Britannica/Orthography

ORTHOGRAPHY (from Gr. ὀρθός, correct, right or straight, and γράφειν, to write), spelling which is correct according to accepted use. The word is also applied, in architecture, to the geometrical elevation of a building or of any part of one in which all the details are shown in correct relative proportion and drawn to scale. When the representation is taken through a building it is known as a section, and when portions of the structure only are drawn to a large scale they are called details.