cplane consists of two plugins in one file: cplane create and cplane remove.
cplane create produces a virtual “construction plane” upon which you can build and edit your geometry using all of LightWave’s native tools. It does so by rotating all geometry in up to 300 active foreground and background layers (150 of each) so that the normal of the selected polygon is pointing up the +Y axis. The geometry is also moved so that the selected polygon is flush with the y = 0 plane. When you are finished, cplane remove rotates and moves everything back where it was. New geometry travels along with the old.
Autor: Dana Burman