M - Commands   
MATH_PLINE_PP (command)
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It creates a Math Polar Parametric Polyline   Pro

See  How to draw a Polar Parametric Math polyline

 

  Menu : Draw  Math Polyline  Polar parametric: r = f(t) ; a = g(t) with r= radius; a= angle    

 Command line: MATH_PLINE_PP