I bought a new 13 inch Macbook Pro Retina. I opened terminal and used the following codes to speed up Safari (it wasn't slow, I just thought maybe it would be even faster). defaults write com.apple.Safari WebKitInitialTimedLayoutDelay 0.25 defaults write com.apple.Safari WebKitResourceTimedLayoutDelay 0.0001 I don't think much happened so I posed the exact same codes again except with 1.0 at the end of each, which I think is default. Do you think I damaged anything? Is it back to default now like it was when I first bought it?