XPPPBHeader
#include <AppleTalk.h>
short qType; 2 4
short ioTrap; 2 6
long cmdResult; 4 18
short ioVRefNum; 2 22
short ioRefNum; 2 24
short csCode; 2 26
28
Notes: XPPPBHeader is a # define'd macro that defines the fields that are shared by the various variants of the XPPParamBlock union. These fields are placed in the beginning of every parameter block that has XPPPBHeader as its first field.