Macro Draw 2D Function

Description
Use it to draw a function described by a "equation" [z=F(x)] (Z-X plane) The example done here generate a parabol. Has no dialog. Needs to be defined:
 * F = variable used in the function,
 * X = initial value of x,
 * Nb = Number of step,
 * Z = function express with x
 * ZZ = function express with xx

Script
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Macro_Draw_2D_Function.FCMacro