I suggested you should look it up, didn't I? I looked at the first four links that Google returns when you type those three words into its search box and they all looked like they would answer. You will find trying to learn a language by asking questions on a forum very slow, and I think you will find that doing Internet searches when you have a clear set of search words will move you along much faster.
Sure, I could tell you what that is. But the references you search out for yourself will have other related information that will likely also be useful.
Joined: May 04, 2007
Thanks a lot. I understand . And I found the answer for the issue.