Spectra Precision FAST Survey Reference Manual - Manual (Page 324)

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average elevations and the average slope within the area.
Bearing & 3D Distance (3D):
This command reports the horizontal distance, elevation difference, slope distance, vertical angle, percent slope, slope
ratio, bearing and azimuth between two 3D points. The user can pick or enter the number of two points, select a polyline
segment or pick two points on any polylines from MAP using the "snaps".