How does toe pointing/ toe pulling stretch work?

[Allstretch]

Alright, so let me ask this.
I have included that bend over calve thing in my stretching. It helps, but this is what I am wondering, does it stretching the calve by itself or does it also helps to stretch the hamstring?

This is regarding to last week's news letter.

[Trapper]

It definitely stretches the calves,
and the hams should get something out of it as well, since they are sore the next day.

[kungfu]

You are in the stretched position like that, hamstring definitely get a stretch.