Enables construction of curves by exact coordinates.
Enter either absolute coordinates or coordinates relative to the start of the curve.
1) Type in the desired coordinates and press the Start button.
2) Type in a second set of coordinates corresponding to the second vertex of the curve. Press the Make button.
3) Continue typing in coordinates corresponding to the third, fourth, etc. vertices of the curve. Press the Make button entering each vertex's coordinate.
4) Press the Close key to end curve.