Spectra Precision Survey Pro v4.5 Recon and Nomad Reference Manual - Manual (Page 325)

Stakeout Menu
R-317
Backsight : accesses the Backsight Setup screen (Page R-114) where
the current backsight can be modified.
Next > : opens the next screen.
Choose a Centerline
Stakeout Stake DTM Choose a Centerline… .
The Select Line screen is used to select a particular polyline or
alignment that defines a centerline. Separate overhead and side
views are displayed for the selected polyline.
Simply select the desired line and tap .