l.plot(tree) or plot(tree)?

[Micbut]

I the userguide n chapter 9.1 it is said to use the following command however it gives a weird error in the PlantGL 3D Viewer:

l.plot(tree)

Are you sure that it should be simply the following?

plot(tree)

When I do that the plot is almost correct (except that the angles are assumed to be always 45 degrees)