I often do this to other types of files, ie. .doc , but it does not seem to be supported on .dat. I am interested in a way to add such details to wallet.dat files in order to organize amongst them. I think this would be very helpful in identifying a wallet.dat file by bitcoin balance or by its designation (cold storage, spending wallet) without having to actually run bitcoin. At least, much better than merely giving the wallet.dat's different file names.

Thoughts?