In any application(on my Win 7 pc), when i try to choose font, the common dialog box pops-up. There, I see some font-names start with @. While the most others don't.
Why the @ symbol is used for? Are these fonts are different? How?
As Raymond Chen explains in his blog post titled Why do some font names begin with an at-sign?:
Also see the Vertical Writing and Printing MSDN article, as well as Michael Kaplan's informative posts on the same subject.