what excatly is 'point control' for?

[S_ A]

Hello,

I am learning espressions. So The tutorial am following explains that which I understand, But what I dnt understand is what is the use of it?

position I can manipulate applying keyframes, but manipulating a fixed position using another effect is so weird., why would I do that when X,Y allows me to move the shape/text... I googled to udnerstand but all of them just explained what it is, but none of them say where, in what scenario/case I can apply it on.

Can anyone give me some expamples? like where I can apply it?

I always practice when I learn something. But in this case I cant practice it because I dnt understand where I can apply this on. thank you. 

[Rick Gerard · Accepted solution]

Effects/Effect Controls/Point Control gives you the ability to create a two or three-value array that can be used to drive or receive information from any other similar array. You could use it to add values to an existing array. I use point controls often when I need to drive the position of multiple layers or effects with one control. Just a simple pickwhip from a layer's position property to a point control, then another from the position of a Lens Flare on another layer, and an offset position for a light would give you the ability to move the layer with the lens flare, the lens flare, and a comp light with one control.

[S_ A]

Wow! It's too advanced. Now I udnerstand. so many things I have yet to know. Thank you so much.