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 Drawing
 lines 
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| Commands | |
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 It creates straight line segments  | 
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 It creates a straight line tangent to two curves  | 
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 It creates a straight line tangent to a curve and perpendicular to an other one  | 
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 It creates a straight line perpendicular to a curve and tangent to an other one  | 
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 It creates a straight line perpendicular to two curves  | 
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 It creates a semi-infinite line  | 
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 It creates an infinite line  |