NAME gr_parabel - a GRToolbox module DESCRIPTION Create 2d parabel. SYNOPSIS: -[x1 x2 step n parabelh o v noc nof now skip ] -help For help on all options. Special Options: -x1 float Start value (Default: 0) -x2 float End value (Default :100) -n int Number of points. -r int Degree of the parabel. (Default: 2) -step int Number of steps, -parabel float Origin of parabel.