MESH allows you to create a set of splines that 
approximates a surface. It allows you to generate a spline
mesh that approximates a two-curve, three-curve, or 
four-curve swept surface, a tabulated cylinder, a surface 
of revolution, or a sphere.

Create the mesh by choosing from the following options:


2 CURVE - to create a spline mesh that is defined by a
selected generator curve and director curve. The mesh
approximates a swept surface that is formed by moving or
sweeping the generator curve along the director curve.

3 CURVE - to create a spline mesh that is defined by 
either two generator curves and a director curve, or by 
one generator curve and two director curves. The mesh
approximates the blending of the two, two-curve surfaces.

4 CURVE - to create a spline mesh that is defined by two
generator curves and two director curves. The mesh
approximates the blending of the four, two-curve surfaces.

TAB CYL - to create a spline mesh that approximates the
surface that is defined by sweeping a generator curve 
along an axis vector (the director) of a specified length.

REVOLUT - to create a spline mesh that approximates the
surface is formed by rotating a generator curve about an
axis by a specified angular distance.

SPHERE - to create a spline mesh that approximates a 
sphere. You can create a sphere in any of the following
ways:

- by specifying the center and radius of the sphere, as
  well as the number of latitude and longitude splines.

- by specifying the center and diameter of the sphere, as
  well as the number of latitude and longitude splines.
