21. The method of claim 18, further comprising the steps of: in response to command data representative of a "rewind" command, retrieving the data for the plurality of fields of the particular time slot and time slots for earlier time periods; and displaying the data from the plurality of fields in consecutive order of the time period from latest to earliest.
18. The method of claim 17, further comprising the steps of: receiving from the user command data representative of a command to be performed on data of a particular time slot from the topic record.