Sorry, I'm going to have to take away Q&A points from you for this answer, because:
a) that link is NOT useful
b) you're pretending that you've used it before, and that it was helpful, when you haven't.
Therefore, c) you must just be grubbing for Q&A points by quickly googling, and posting something that appears to be relevant, without actually having any intention of helping the original poster!
You could ruin your professional reputation if you try stunts like that on StackOverflow!