What is this and how can I remove it?

I am using the EP1 hammer for the CS:S textures and I am getting this weird thing on selections in the 3D view.

http://img371.imageshack.us/img371/1075/omgihatethisshit.png

Please tell me what it is and how to disable it. Thanks in advance.

It’s the 3D grid. Toggle with:

Thanks, it worked.

Why wouldent you want that, its helpful alot of times.

Unecessary eye-rape/cluttering the 3d view.

Kills my computer. And I have a pretty good computer

Strange, I find it useful when making displacements etc. I wish Hammer was better optimized.

Try having it on and select a bunch of stuff. Then tell me that you don’t accidentally move a brush or ten.