paper or grid paper) is divided into squares by horizontal and vertical lines.

History

Initially, paper was ruled by hand, sometimes using templates. Scribes could rule their paper using a "hard point," a sharp implement which left embossed lines on the paper without any ink or color, or could use "metal point," an implement which left colored marks on the paper, much like a graphite pencil, though various other metals were used.

On 15 June 1770,

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