2P 2S R (2 points, 2 slopes, rho) allows you to create a
conic based on the positions for the start point and
endpoint of the conic, a value (rho) that determines the
type of conic, and the slope of the conic at the start 
point and endpoint.

Indicate the start point of the conic, using a Position 
Menu option.

Indicate the endpoint of the conic, using a Position Menu
option.

Enter a rho value (0.0 < rho < 1.0) and press <Enter>, or
accept the default value by pressing <Enter>.

Define the slope of the conic at the start point, using 
the procedures that are described in the CADKEY User 
Reference Guide.

Define the slope of the conic at the endpoint.

If a conic cannot be created, an error message is 
displayed. You are prompted to press <Enter> and to 
redefine the conic, beginning with the position of the 
start point.

In 2-D construction mode, the indicated points and the
slopes are projected to the current construction plane. 
The conic is created in the current construction view, at
the depth that is active when the slope at the endpoint is
defined.

In 3-D construction mode, the conic is created in the 
plane that is defined by the two indicated points and the 
first tangent vector. The second tangent vector is 
projected to this plane.
