However, file and site names, and constraint identifiers are case sensitive. The first line, the diagnostic flag, controls the amount of information page4 tells the user about its actions. The larger the number, the more information is output. This flag is potentially dangerous because at the large quantities of printed output which could be generated. The entry on the second line control how frequently page4 confirms its operation by writing the current data time to the screen.
Units are in seconds.
In the example, messages appear on the screen after each five minutes of data. Next, the interval between observations is given. This controls how much data are used. Units are in seconds. For example, data may be recorded and edited using a 30 second interval, but process with page4 using a 120 second interval.