Can your friends do this? Can your friends do that? Can your friends pull this out their little hat?

Specifically:

1. Really read and understand the question.
2. Give an answer in the text, not via links.
3. Don't RTFM.

P.S.: If you didn't read before answering, if you are "not an expert, but", if you are "not sure what are you trying to achieve with this", if you want to answer with a link to a hundred-miles-long forum or a 100MB plain text RFC that maybe could help, if you are pretty sure the original poster is doing it wrong just because they do it their own way, then please, please refrain from answering and recurse yourself with a rake.