#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(2.0);
     newpath(); arrow(0.1, 0.1, 0.9, 0.1, 0.025); stroke();
     newpath(); arrowa(0.1, 0.2, 0.9, 0.2, 0.025); stroke();
     newpath(); arrowb(0.1, 0.3, 0.9, 0.3, 0.025); stroke();
     newpath(); arrowc(0.1, 0.4, 0.9, 0.4, 0.025); stroke();
     newpath(); arrowwide(0.1, 0.5, 0.9, 0.5, 0.05, 0.01); stroke();
     text(0.05,0.04,"(0.1,0.1)");  text(0.82, 0.04,"(0.9,0.1)"); 
     stroke();
     fin(); 
}