Spectra Precision FAST Survey Reference Manual - Manual (Page 261)

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Though this is the classic use of the Point-Defined option (using points), slope staking can be conducted from a
single centerline and single profile or from a picked 3D polyline. Points can be selected by number or picked
directly off the screen.
When a new horizontal alignment is selected by 3D polyline or point method, the program will ask if you wish to
overwrite any existing vertical alignment selection. The typical answer is yes—you want it for both, and you are
ready to stake any station at any interval based on user-entered slopes. Think of points 6 to 7 as the flow line of a
ditch with steep side slopes, and the goal is to lay the slopes back at 2:1—a perfect application for Point-Defined
Slope Staking.
 Design File Dialog:
If you select Design Files, a dialog appears.