OSX with Windows 7 Snap?

I apologies in advance if this is an obvious question.

So I recenty got a OWC 115gb SSD and started to install a fresh copy of OSX 10.6.4. I installed a few of my favorite programs and everything is working perfectly.

Now, as i was moving windows around I accidentally found the "snap" function like Windows 7 on my screen. In the example below i moved the window to the left.




Has this always been a function within OSX 10.6.7? What do you guys think?

 

THANK YOU!! man i thought i was going crazy.