iphone: how to perform Symbolication while using crash reports in xcode4

I m not getting how the Symbolication is work? How .dSYM file is created开发者_开发知识库 and how to convert the binary code to .dSYM file.and how to see the the .dYSM file

To store and manage dysm files along with application package XCode has "Archive" option (Product -> Archive). All created archives can be accessed through Organizer (Window -> Organizer). Xcode uses this archives to symbolicate crash reports. Import your crash reports into organizer (Devices -> Device logs) and they will be symbolicated automatically.