For English only!

Vote 5* for these responses, I agree with you. It''s also my opinion,

and a'' we say "a apostrophe"

Thank you very much for your answers and discussion.
1. I agree with Totrongto3 that "@" means "at" when it appear with email address or some other cases (for example @1000K : at 1000 Kelvin). However, how do we call if it appears alone? commercial a? I am not sure.
2. "_" and "-" signs we call "em dash" and "dash". "underscore" means "underline" to emphasize something. The "Lan_anh@yahoo.com" is therefore spelt "Lan em dash anh at yahoo dot com".
3. Piccolo is right for my question. A postrophe in my text was automatically changed into the double postrophe (a") due to the TTVN''s error.

Thanks Doctor Havalo a lot for all.
Let''s enjoy an interesting love poem:

No Words
by GAGOO
Words of beauty
And words of praise,
No words are there
To form the right phrase.
Beautiful and sensational
Compassionate honest and true,
Desirable and delightful
Gorgeous and ***y too.
These words come close
To what I see in you,
But no words can explain
None I can think of ever do.
Many words come to mind
As there is so much more,
For you my darling Trish
I simply love and adore.
But no words can express
And no tongue can tell,
Just what I see in you
Or how I feel as well.
Even the three words
I love you is not enough,
To truly express my feelings
For you it is more than love.
The exact and precise words
Elude me and my thoughts,
All I know is there is no other
Compared to you there is naught.
And as my poem comes to an end
My love for you never will,
For I love you more than life
By you my heart and life is filled

if it appears alone? commercial a? I am not sure.
Shuold call it: Honda Motor

-thanks havalo, but for the question 2 the symbol "_" is called underscore or understrike ( from Wikipedia http://en.wikipedia.org/wiki/%40).
-dash is only "-" and I think "en dash" and "em dash" are similar meaning depends on how long is the "-", http://en.wikipedia.org/wiki/Em_dash
i think @ can be translated comercial at.
thanks anyway

Yes, you are right. In this case, underscore ( _ ) is used to replace spaces. "Dash", "en dash" and "em dash" corresponding to their uses are very interesting. Thank you very much for that.

oh, u''re very welcome, guy

Woa ..........
I find it very funny when they always have a lot to write, but it never amounts to much !!!

what''re you guy talking about?