Spectra Precision FAST Survey Reference Manual - Manual (Page 289)

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Other options in the command include drawing the actual point symbols, drawing GIS line feature attributes and
drawing in 2D (at zero elevation). If "Save GIS Line Feature to Block (Center)" is clicked on, then attributes associated
with a polyline will draw in the middle of the longest segment of the polyline. If "Save GIS Line Feature to Block" is
clicked on, but the "Center" option is not clicked on, then the GIS attributes of the polyline draw on the second point of
the line, below the other "standard" point attributes such as elevaiton and description. Shown below is the combination
of normal point attributes (not placed on layer 0) and linework GIS feater plotting, shown associated with the second
point in the polyline.
DWG File - Import .dwg (IDWG)
The IDWG command directly loads a ".dwg" file into FAST Survey and all layer names are retained. No hatching,
points or blocks are imported. Only polylines or text that has been converted to polylines will appear in FAST Survey.