#include "pssub.h"

void main()
{    
     init();
     viewport(0.2,0.2,0.8,0.8); xyworld(0.0,0.0,1.0,1.0);
     linety(2); rect(0.0, 0.0, 1.0, 1.0);stroke();
     linety(1); linewidth(10.0); 
     linecap(0); newpath(); plot(0.1, 0.1, 3); plot(0.9, 0.1, 2);  stroke();
     setgray(1.0);circ(0.1,0.1,0.003);fill(); circ(0.9,0.1,0.003);fill();  setgray(0.0);
     linecap(1); newpath(); plot(0.1, 0.3, 3); plot(0.9, 0.3, 2);  stroke();
     setgray(1.0);circ(0.1,0.3,0.003);fill(); circ(0.9,0.3,0.003);fill();  setgray(0.0);
     linecap(2); newpath(); plot(0.1, 0.5, 3); plot(0.9, 0.5, 2);  stroke();
     setgray(1.0);circ(0.1,0.5,0.003);fill(); circ(0.9,0.5,0.003);fill();
     linewidth(0.8);setgray(0.5);linety(2);line(0.1,0.1,0.1,0.5);line(0.9,0.1,0.9,0.5); 
     setgray(0.0);text(0.06,0.02,"(0.1,0.1)");  text(0.82,0.02,"(0.9,0.1)");
     stroke();
     fin(); 
}