TYPE: SOP
TITLE: Circle SOP

The Circle operation creates open or closed arcs and circles of various types.

Parameters:

    Primitive Type   - Type of geometry created.

    Orientation      - Orientation of the circle.
    Radius           - The radii of the circle.               /radx /rady
    Center           - Position of the center of the circle.  /tx  /ty  /tz
    Order            - Order of the NURB or Bezier geometry.  /order
    Divisions        - Number of points in the circle.        /divs
    Arc Type         - How the circle should be closed.
    Arc Angles       - The start and end angles of the arc    /beginangle 
                       in degrees.                            /endangle

