Just What Is The .PRV File? FILE: AP.HLP The PRV file is an ASCII collection of values that is used to give you a quick indicator of how a current period compares to a previous. If this file is not available, DBK does not print the comparitive values. At the end of each summary period, DBK will ask if you want the .PRV file to be written. If you answer Yes, certain summary totals will be stored in a .PRV file that will then be read for each subsequent period summary. These .PRV values will be printed underneath the totals for the current period so the variance can be easily obtained. With this, you should know immediately whether or not your game is going in the right direction. This type of information is also important if you are trying to determine the efficiency of a changed swing, new grip, stance, club etc. Any period summary can be used for the .PRV values. You could for example combine all previous months .GLF (result) files to represent the entire season. Then, your current report would reflect current vs. year-to-date. If you just keep season stats, rather than month to month, the .PRV file could be the previous seasons performance.