4.3BSD - /usr/src/usr.bin/troff/sdef.h

   1: /*	sdef.h	4.2	83/08/11	*/
   2: 
   3: struct s {
   4:     int nargs;
   5:     struct s *pframe;
   6:     filep pip;
   7:     int pnchar;
   8:     int prchar;
   9:     int ppendt;
  10:     int *pap;
  11:     int *pcp;
  12:     int pch0;
  13:     int pch;
  14:     };

Defined struct's

Usage of this include