Can I snap path point to other path point like Illustrator?

Hello. I am using AE cs6 win version.

Now I am trying to make precise  square shape using pen tool.

And I have a question.Can I snap path point to other path point in AE like Illustrator?

Or Can I align them like Illustrator's align tool?

I use grid snap to make a precise shape, but If I can snap to other path point, it will be much easier to make shapes and to make animation.Do you know how? Or if it's impossible, how to make precise  shapes using pen tool? Using photoshop or Illustrator is the answer?Thank you in advance.