Spectra Precision FAST Survey Reference Manual - Manual (Page 207)

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You may specify individual point numbers or type in a range of point numbers to define the area. Individual point
numbers can be entered as 602,606,605,603,602 or each number followed by Enter. After clicking OK (green
checkmark), the area is reported at the bottom of the map screen. A temporary polyline is also drawn between the
points. Results are reported in square feet and acres when units are set to feet, and square meters when units are set to
metric.
If the polyline method is used to solve the area, the program will bring up the MAP screen where you pick a
polyline. Since the area can be written to a raw file (see below), you can use the direction icon in the lower right of the
screen to confirm or change the direction that the polyline is drawn.