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

Choose either a three-sided or four-sided polygon from the
displayed menu. A three-sided polygon mesh allows for 
easier shading, a four-sided polygon mesh is a more 
precise mesh.

Define the sweep of the profile by choosing from the
following options:

TRANSL (translate) - to maintain the generator curves'
orientation relative to the world coordinate frame as they
move along the director curves.

ROTATE - to maintain the generator curves' orientation to
the director curves as they move along the director 
curves.

A temporary mesh is displayed, along with a NO/YES menu. 
If the curves are connected correctly, choose YES. If the
curves are not connected correctly, choose NO and select
another generator curve.

Indicate whether to group the entities. Choose NO to
continue without grouping. Choose YES to create a group,
and enter a group name.

The mesh is created.
