For a technical answer, A data file is a text file that resides on the server. The WebCal program writes and deletes events to and from these text files to keep track of all the events on your calendar. You can have multiple data files in your WebCal program. This eases the the maintenance of the WebCal by keeping related events in a centralized file. An example of this would be having a data file for each month of the year, that way if you wanted to go remove something from your calendar you know just where to go to find it.



  The things you want to keep in mind about the data files are:

1. Each file can contain any event. Meaning, you can post an event to the March calendar even though you added it to the October data file. It doesn't matter what data file you put it in, it will still be in the month you choose to add it to. The multiple data files are a way for us people to keep things organized.
2. You want to keep the names of the data files pretty simple October would contain October Events etc.
3. When deleting events from a data file, you should make sure of the data file you are selecting to delete. If you delete the wrong one it is gone, you will have to re-enter the information.