This is why I do this - for the heartfelt thanks. :)
Telling someone to look it up - and where to look it up - is, IMO, usually the best advice possible. I showed you exactly where to look. Without any example or code whatsoever, there is no possible way I could have answered your question more specifically.
Most questions here can be answered by either pointing people in the right direction or showing them how to ask questions effectively, so that it does not take several exchanges to eke the necessary details out of them. That leaves more resources to answer and debate the actual tough questions.
Sorry if my response seemed callous, but there are many who use this forum unapologetically as a way to get a task done without bothering to try to learn anything first. It gets to you after a while. We are all volunteers, not paid employees of some company trying to keep their customers happy, and willing to cheerfully tell them where the "enter" key is all day, or politely asking to insure they've plugged the thing in.
I'm actually a nice guy who likes to help people, but I need a little meeting in the middle. Zed Shaw or Linus I'm not. (Though I hear that Linus really is a nice guy who likes to help people too...)