/* BUFDEF.h - define message buffer parameters */

#define BUFSIZE	26	/* buffer size */

typedef struct {
   short len;
   char  initials[3];
   short cksum;
} mheader;

#define DATASIZE (BUFSIZE - sizeof(mheader))  /* data portion of buffer */

typedef struct {
   mheader header;
   char    data[DATASIZE];
} message;