// ----------------------------
//  just draw a white parabola
// ----------------------------

// set window size 400x400
width =400;
height=400;

// disable clipping
clip=none;

// set curve color white
curve_red  =255;
curve_green=255;
curve_blue =255;

// set curve width
curve_width=2;
curve_gamma=3;

curve = y-x^2;

clear_screen;
draw_curve;