This is basically a summary of the link posted by OP. Edit: not that it's a bad thing, I just mention it so people who read this know for sure they can avoid t

This is basically a summary of the link posted by OP. Edit: not that it's a bad thing, I just mention it so people who read this know for sure they can avoid the link if they already know how to use the tips listed here. The article has code examples and more details.