Spectra Precision Survey Pro v3.80 Recon iPAQ Reference Manual - Manual (Page 68)

Survey Pro Reference Manual
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If the button is blank and the current job contains at least one
polyline, you will be prompted to select an existing polyline. Once
selected, future points stored with this linework command will be
appended to the selected polyline.
Props : A single polyline can contain different line types.
The Props command will open the Auto Linework
Properties dialog box, shown here, where when the
checkbox is checked, the linework command will always
switch back to the specified default linework command
after changing and storing a different line type for a
particular feature.
$GG« : allows you to create a new linework command.
5HPRYH« : removes the selected linework command.
5HPRYH $OO« : removes all the existing linework
commands.
Note: All linework shots require at least two points with
a particular linework command before a polyline segment is created.
If only the initial point has been stored, no polyline segment is yet
created.