Spectra Precision FAST Survey Reference Manual - Manual (Page 309)

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For L-shaped buildings or figures with angles, an additional interior offset point is calculated at the intersect of the
parallel offset lines based on the entered offset distance, such as 10 (see point 165 below--the lines to 165 are drawn
only to illustrate the 10' offset):
Modify - Remove Arcs (RMA):
Pick any polyline with an arc, specify the “offset cutoff” spacing, and turn the arc into chords. Offset cutoff refers to the
maximum separation between the chord and the original arc. If you enter a small cutoff distance of 0.1, then at no point
do the chord segments differ from the arc than 0.1. Be careful with this command – there is no “Undo” to restore the
arcs (though you can immediately start a new job and “re-load” the last, saved DXF file of the drawing). After removing
arcs, you can draw a polyline from points on the arc, after creating small chords, using the "endpoint" snap (first snap on
the left in the list of snaps).
Modify - Fillet (F):
Similar to AutoCAD’s Fillet command. It prompts: Cmd: Fillet -Ra/Pl/eXit/First seg 25.00. If you are trying to
inscribe a curve at the corner of a polyline, you enter the desired radius first by selecting R for Radius (at the above
prompt). Then you choose the P option. This leads to the prompt, Cmd: Fillet -Ra/Pl/eXit/Select pl 25.00. Select the
polyline near the vertex where you want the curve to go. This completes the process. If you wish to change the radius,
enter R. If you want to fillet the corner of 2 distinct polylines, then just pick them as prompted (do not do the P for
Polyline option). This command will only work with 2D polylines, completed with the command 2DP, or imported
from a DXF file as 2D polylines, or converted from 3D using the command C2D which changes the vertice elevations to
zero.