PK_PARAM_periodic_t

typedef int PK_PARAM_periodic_t;

Used in:

PK_BODY_loft_end_conds_t
PK_FACE_is_periodic
PK_PARAM_sf_t

This token indicates whether the parameterisation is periodic.  It has one of
the values:

    PK_PARAM_periodic_no_c       not periodic
    PK_PARAM_periodic_yes_c      periodic continuously differentiable at seam
    PK_PARAM_periodic_seamed_c   periodic but not continuously
                                 differentiable across seam