The Restore data menu option allows you to restore data in the (very rare) case of database corruption.
DO NOT USE THIS OPTION WITHOUT FIRST CONTACTING STEVE CARTER FOR ADVICE ON HOW TO PROCEDE. This option is only there for emergency use; using this option incorrectly could result in the loss of data.
Because THoTH uses an embedded database, I have provided this functionality just in case the database should somehow become corrupted. It is highly unlikely that you will ever need this.