PK_boolean_function_t

typedef  int PK_boolean_function_t;

Used in:

PK_BODY_boolean_o_t
PK_BODY_identify_facesets_o_t
PK_FACE_boolean_o_t
PK_FACE_instance_bodies_o_t

PK_boolean_function_t has three values:
    PK_boolean_intersect_c        intersect target and tool entities
    PK_boolean_subtract_c         subtract tool entity from target entity
    PK_boolean_unite_c            unite target and tool entities