PK_PARAM_end_t    


typedef int PK_PARAM_end_t;


This data type is used to specify the end conditions of splinewise
bcurves and bsurfs and lofted bsurfs.
It has the following values:

    PK_PARAM_end_periodic_c              periodic parameterisation
    PK_PARAM_end_natural_c               natural end condition ( no curvature )
    PK_PARAM_end_clamped_vector_c        end derivative vector(s) supplied
    PK_PARAM_end_clamped_bcurve_c        b-spline vertices of derivative
                                         curve supplied