a                      _A_ARCH                  _A_HIDDEN
 _ANALOG                 _ANALOGCOLOR             _ANALOGMONO
 _A_NORMAL               _A_RDONLY                _A_SUBDIR
 _A_SYSTEM               _A_VOLID
 
  b                      _BLACK                   _BLUE
 _BRIGHTWHITE            _BROWN                    BUFSIZ
  BYTEREGS
 
 _CGA                    _COLOR                   _COM_110
 _COM_150                _COM_300                 _COM_600
 _COM_1200               _COM_2400                _COM_4800
 _COM_9600               _COM_CHR7                _COM_CHR8
 _COM_EVENPARITY         _COM_INIT                _COM_NOPARITY
 _COM_ODDPARITY          _COM_RECEIVE             _COM_SEND
 _COM_STATUS             _COM_STOP1               _COM_STOP2
 _CYAN
 
__DATE__                 _DEFAULTMODE             _DISK_FORMAT
 _DISK_READ              _DISK_RESET              _DISK_STATUS
 _DISK_VERIFY            _DISK_WRITE               DOMAIN
  DOSERROR                DOS_MODE
 
  E2BIG                   EACCES                   EBADF
  EDEADLOCK               EDOM                     EEXIST
 _EGA                     EINVAL                   EMFILE
 _ENHCOLOR                ENOENT                   ENOEXEC
  ENOMEM                  ENOSPC                   EOF
  ERANGE                 _ERESCOLOR               _ERESNOCOLOR
  EXDEV
 
__FILE__
 
 _GAND                   _GBORDER                 _GCLEARSCREEN
 _GCURSOROFF             _GCURSORON               _GFILLINTERIOR
 _GOR                    _GPRESET                 _GPSET
 _GRAY                   _GREEN                   _GVIEWPORT
 _GWINDOW                _GWRAPOFF                _GWRAPON
 _GXOR
 
 _HARDERR_ABORT          _HARDERR_FAIL            _HARDERR_IGNORE
 _HARDERR_RETRY          _HEAPBADBEGIN            _HEAPBADNODE
 _HEAPBADPTR             _HEAPEMPTY               _HEAPEND
 _HEAPOK                 _HERCMONO                _HGC
 _HRES16COLOR            _HRESBW
 
 _KEYBRD_READ            _KEYBRD_READY            _KEYBRD_SHIFTSTATUS
 
 _LIGHTBLUE              _LIGHTCYAN               _LIGHTGREEN
 _LIGHTMAGENTA           _LIGHTRED                _LIGHTYELLOW
__LINE__                  LK_LOCK                  LK_NBLCK
  LK_NBRLCK               LK_RLCK                  LK_UNLCK
 
_MAGENTA                _MCGA                     _MDPA
_MONO                   _MRES16COLOR              _MRES256COLOR
 _MRES4COLOR             _MRESNOCOLOR
 
 _NKEYBRD_READ           _NKEYBRD_READY            _NKEYBRD_SHIFTSTATUS
  NSIG                    NULL
 
  O_APPEND                O_BINARY                 _OCGA
  O_CREAT                _OEGA                      O_EXCL
  O_RDONLY                O_RDWR                   _ORESCOLOR
  OS2_MODE                O_TEXT                    O_TRUNC
  OVERFLOW               _OVGA                      O_WRONLY
 
 _PG_BARCHART            _PG_CENTER                _PG_COLUMNCHART
 _PG_DECFORMAT           _PG_EXPFORMAT             _PG_LEFT
 _PG_LINEARAXIS          _PG_LINECHART             _PG_LOGAXIS
 _PG_PIECHART            _PG_RIGHT                 _PG_SCATTERCHART
  PLOSS                  _PRINTER_INIT             _PRINTER_STATUS
 _PRINTER_WRITE           P_NOWAIT                  P_NOWAITO
 P_OVERLAY                P_WAIT
 
  r                      _RED
 
  SEEK_CUR                SEEK_END                  SEEK_SET
  SH_COMPAT               SH_DENYNO                 SH_DENYRD
  SH_DENYRW               SH_DENYWR                 SIGABRT
  SIG_ACK                 SIGBREAK                  SIG_DFL
  SIGFPE                  SIG_IGN                   SIGILL
  SIGINT                  SIGSEGV                   SIG_SGE
  SIGTERM                 SIGUSRx                   SING
  S_IREAD                 S_IWRITE                __STDC__
 
  t                      _TEXTBW40                 _TEXTBW80
 _TEXTC40                _TEXTC80                  _TEXTMONO
__TIME__                 _TIME_GETCLOCK            _TIME_SETCLOCK
__TIMESTAMP__             TLOSS
 
  UNDERFLOW
 
 _VGA                    _VRES16COLOR               _VRES2COLOR
 
 w
 _WHITE