The following GRAD commands

        HorzLine([C9],[L13],300,1);
        SetStyle(0x3333);
        HorzLine([C9],[L13,10],300,1);
        SetStyle(0);
        HorzLine([C9],[L13,20],300,1);
        SetStyle(0x11ff);
        HorzLine([C9],[L13,30],300,1);

produce the following results:






    To create a pie chart is very simple too.
       SetStyle(0xffff);
       Earc2(170,50,83,50,100,270);
       ArcPoint(&x1,&y1,&x2,&y2);
       Line(x1,y1,170,50);
       Line(170,50,x2,y2);
       Earc2(178,45,83,50,10,90);
       ArcPoint(&x1,&y1,&x2,&y2);
       Line(x1,y1,178,45);
       Line(178,45,x2,y2);
       PatternFill(160,50,pattern1,0);
       PatternFill(190,30,pattern2,0);