/**************************************************
 *                NIB                             *
 **************************************************/ 
struct nib { 
  struct nib *link;           /* pointer to next nib            */ 
  char len;                   /* length of the nib              */
  struct hscb *hscb;          /* pointer to hscb                */ 
  char user[4];               /* user data                      */ 
  char sym[8];                /* nau element name               */ 
  char mode[8];               /* node name                      */ 
  char devch[8]; 
  char procd[4]; 
  unsigned flag:8;            /* flag: 0x80-last nib            */ 
  char rsrv; 
  short limit;                /* resplim                        */ 
  struct exlist *exlist;      /* pointer to exlist              */ 
  char lmode[8];              /* logon mode                     */ 
  struct bind *bind;          /* bind area address              */ 
  char usrnm[8];              /* user name                      */ 
  };

  #define NIBSIZE 0x44 
  #define NIBLAST 0x80
  #define NIBCON 0x40 
  #define REC RECORD