typedef int PK_ERROR_code_t; This datatype contains the error codes that may be returned by a call to a PK function. For a complete list of the error codes that may be returned from a PK function call, see either: * PK Interface Programming Reference, Appendix C, Error Codes (Numeric) * PK Interface Programming Reference, Appendix D, Error Codes (Alphabetic) For more information about error handling, see Ch 57, Error Handling, in the Parasolid Functional Description.