plotinit(1);plotmove(1,0,0); plotcolor(1,"red"); plotbox(1,50,75,1); plotcolor(1,"blue");plotell(1,50,75,0); plotdraw([1,100,100]);
plotinit(1);plotmove(1,0,0); plotcolor(1,"red"); plotbox(1,50,75,1); plotcolor(1,"blue");plotell(1,50,75,1); plotdraw([1,100,100]);

plotinit(1);for(i=1,5,my(s=sin(Pi*i/20));plotmove(1,50-s*50,50-s*50);plotell(1,50+s*50,50+s*50));plotdraw([1,100,100]);