Shape script to draw an open arrow head

[Modesto Vega]

I know the following will draw a closed triangular arrowhead at the target of a relationship:

Code: [Select]

shape target

{

     // draw an arrowhead at the target end

     rotatable = true;

     startpath();

     moveto(0,0);

     lineto(16,6);

     lineto(16,-6);

     endpath();

     fillandstrokepath();

}
But, how I draw an open arrowhead such as the dependency arrowhead?

[qwerty]

Code: [Select]

shape target
{
     moveto(16,6);
     lineto(0,0);
     lineto(16,-6);
}

(just right out of my head)

q.