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. The shorter interval would be have advantages for data editing, but be unnecessary for a satisfactory final solutions. Line four is the minimum observation elevation cutoff mask.
Units are degrees.
A gap in the data implies a discontinuity or cycle slip. The next line specifies the minimum significant gap size in seconds. The parameter on line six sets the limit, in meters, beyond which points are designated outliers. The next five lines control the tropo model, estimation type and interval. The first of these lines identifies the tropo model to use.