Hi,

I noticed that Xcode 4 now has to be downloaded from the app store unless one 
is a 'registered developer' ie
a paying customer...

I have some questions...

1) The license  appears to allow installation on multiple machines. How does 
downloading from the App Store
  make this possible ( ie is it possible to move whatever is downloaded to 
multiple machines and doing multiple
 installations or does one have to download different instances to different 
machines?

2) Does XCode 4 install a new 'uniix' environment tool chain? I did notice that 
the XCode 4 'Adverts' talked about
using the LLVM compiler rather than gcc.

3) I have XCode 3 installed, will I have to uninstalled it before installing 
XCode 4?

4) Any thing else I need to be concerned with before biting the bullet?


Jerry
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