ASUB, NA1, P1, P2, P3, P4
Generates an area using the shape of an existing area.
NA1Existing area number whose shape is to be used.  If P1 =
P, graphical picking is enabled and all remaining arguments are ignored (valid
only in the GUI).
P1Keypoint defining starting corner of area.
P2Keypoint defining second corner of area.
P3Keypoint defining third corner of area.
P4Keypoint defining fourth corner of area (defaults to P3).
The new area will overlay the old area. Often used when the area to be subdivided consists of a complex shape that was not generated in a single coordinate system. Keypoints and any corresponding lines must lie on the existing area. Missing lines are generated to lie on the given area. The active coordinate system is ignored.