Microsoft published an updated Sync Framework 4.0 CTP documentation on MSDN library. It now includes the documentation for the SyncSvcUtilHelper UI tool, which is built on top of the SyncSvcUtil command-line tool.
This UI tool exposes all the functionalities supported by the command-line tool.
In addition, it lets you create or edit a configuration file that you can use later to provision/deprovision SQL Server/SQL Azure databases and to generate server/client code.
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