deptrai, you are an anonymous poster too. The purpose of the tech section of this forum is to exchange informations and opinions between pilots all over the world who can bring different levels of accuracy and reliability in their contributions. I would refrain from using this kind of sarcasm towards members that are trying to bring in some help, because you never know who is writing behind a nickname. It is obviously much more effective to provide links as you did and references to official material, but this does not mean that people can not share their points of view if they comply with the rules of engagement and are active industry professionals.
Cheers.