To Add an Endpoint at a Selected Datum Point or Vertex
1. After you pick the spline, click Dtm Pnt/Vrtx on the PNT LOCATION menu.
2. Pick a datum point or vertex at which to add a spline endpoint. The new spline highlights in green, and the old spline highlights in red.
3. Click Confirm on the CONFIRMATION menu to accept the new spline shape.
4. Click Cancel to return to the SPLINEPNTS menu.
Using Dtm Pnt/Vrtx to Add an Endpoint to a Selected Vertex
1. New spline
2. Old spline
3. Selected vertex
