2.9BSD - /usr/include/acctinfo.h

   1: struct account {
   2:     int ac_acct;    /* whom to charge	*/
   3:     int ac_pages;   /* lpr pages		*/
   4:     int ac_quota;   /* maximum quota	*/
   5:     long    ac_sys;     /* system cpu		*/
   6:     long    ac_usr;     /* usr cpu		*/
   7:     long    ac_real;    /* real time use	*/
   8:     long    ac_ttyio;   /* tty i/o		*/
   9:     long    ac_diskio;  /* disk i/o		*/
  10:     long    ac_m1;      /* miscellaneous	*/
  11:     long    ac_m2;
  12:     long    ac_m3;
  13:     long    ac_m4;
  14:     long    ac_m5;
  15: };

Defined struct's