> 1. Why is the file a .PRC and not a .PDB?
> I thought these were preference DATABASES....

They are, they're just resource databases (not record databases).
Prefs are stored according to the creator type of the application, and then by
ID... that creator type translates to a resource type, and the IDs are resource
IDs within the type.  This allows apps to save several different chunk of
preference data.

> 2. Why does this file exist? I thought the whole point of UNSAVED
> preferences was that they do NOT get backed up to your PC?

That is precisely the point, and this database should NEVER BE BACKED UP.  Or,
rather, it should never be restored since some apps (and possibly the system)
may store data in it that won't be valid when backed up & restored.
Unfortunately, its possible to set the backup bit on this database (manually, or
using some versions of BackupBuddy) and then the backup conduit will dutifully
back it up because it doesn't know any better.  This has actually caused us some
odd problems during development, but I don't remember if they were all worked
around for shipping ROMs or not...

Hope this clarifies things a little bit...

Jesse




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