While we are talking about spline bugs, here is another one. One cannot do the
following:
#declare thespline = Spline {
cubic_spline
..
floats, points
..
}
...
do something with the spline
...
#undef thespline // this produces an error
This problem can become an issue when you are using huge numbers of splines in
the scene and the memory for them never gets freed (needless waste of space)
Andrew C
