In the first chapter we analyzed the application of AutoCAD editing commands commonly used in 2D, such as
ERASE, which work exactly the same way in 3D as in 2D. Others, such as
OFFSET depend on the object plane. Some more, such as
ROTATE depend on the current user coordinate system.
In this chapter we present some commands that are specific to 3D operations that can be applied to any object. The editing commands specific to solids and surfaces are the subject of the next chapter.
The topics covered in this chapter are: