twinkle - is used to have a graphics entity twinkle
twinkle let the graphics entity given by its handle h twinkle. It can be used to find the graphics object corresponding to a graphics handle in the graphics window. By default the graphics entity twinkles 5 times, but you can change this by using optional argument n .
x=linspace(-2*%pi,2*%pi,100)'; plot2d(x,[sin(x),cos(x)]); e=gce(); p1=e.children(1); p2=e.children(2); // cos plot twinkle twinkle(p1) // sin plot twinkle 10 times twinkle(p2,10) // axes twinkle twinkle(gca())