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flushall
    flushall
    fopen, _wfopen

fmbccmp

fmbccpy

fmbcicmp

fmbclen

fmbgetcode

fmblen

fmbputchar

fmbrlen

fmbrtowc

fmbsbtype

fmbscat

fmbschr

fmbscmp

fmbscpy

fmbscspn

fmbsdec

fmbsdup

fmbsicmp

fmbsinc

fmbslen

fmbslwr

fmbsnbcat

fmbsnbcmp

fmbsnbcnt

fmbsnbcpy

fmbsnbicmp

fmbsnbset

fmbsncat

fmbsnccnt

fmbsncmp

fmbsncpy

fmbsnextc

fmbsnicmp

fmbsninc

fmbsnset

fmbspbrk

fmbsrchr

fmbsrev

fmbsrtowcs

fmbsset

fmbsspn

fmbsspnp

fmbsstr

fmbstok

fmbstowcs

fmbsupr

fmbterm

fmbtowc

fmbvtop

fmemccpy

fmemchr

fmemcmp

fmemcpy

fmemicmp

fmemmove

fmemset

fmod
    fmod
    The fmod Function

Font Manipulation Functions

fopen
    fcloseall
    fdopen, _wfdopen
    fopen, _wfopen
    freopen, _wfreopen
    fseek
    Global Data

fopen, _wfopen

fp

FP_OFF
    FP_OFF
    Header Files in /watcom/h
    MK_FP

FP_SEG
    FP_SEG
    Header Files in /watcom/h
    MK_FP

fpreset

fprintf
    _snprintf, _snwprintf
    fprintf, fwprintf
    perror, _wperror
    Printing Pointer Values
    sprintf, swprintf
    vfprintf, vfwprintf

fprintf, fwprintf

fputc
    fputc, fputwc
    putc, putwc

fputc, fputwc

fputchar

fputchar, _fputchar, _fputwchar

fputs

fputs, fputws

fputwc

fputwchar

fputws

fread

free
    _fullpath, _wfullpath
    _getdcwd, _wgetdcwd
    calloc Functions
    free Functions
    getcwd, _wgetcwd
    Memory Allocation Functions
    realloc Functions
    strdup, _strdup, _fstrdup, _wcsdup, _mbsdup, _fmbsdup

free Functions

freect

freopen
    fcloseall
    freopen, _wfreopen
    fseek
    Stream I/O Functions
    Wide Character Stream I/O Functions

freopen, _wfreopen

frexp

fscanf
    fscanf, fwscanf
    Reading Pointer Values
    Reading Ranges
    vfscanf, vfwscanf

fscanf, fwscanf

fseek
    _fsopen, _wfsopen
    fopen, _wfopen
    fseek
    ftell
    ungetc, ungetwc

fsetpos
    _fsopen, _wfsopen
    fgetpos
    fopen, _wfopen
    fsetpos
    ungetc, ungetwc

fsopen

fstat
    fstat, _fstat
    Header Files in /watcom/h
    Header Files in /watcom/h/sys

fstat, _fstat

fstrcat

fstrchr

fstrcmp

fstrcpy

fstrcspn

fstrdup

fstricmp

fstrlen

fstrlwr

fstrncat

fstrncmp

fstrncpy

fstrnicmp

fstrnset

fstrpbrk

fstrrchr

fstrrev

fstrset

fstrspn

fstrspnp

fstrstr

fstrtok

fstrupr

fsync

ftell
    File Position Errors
    fseek
    ftell

ftime
    ftime
    Header Files in /watcom/h/sys

fullpath

function

function classification

fwcrtomb

fwcsrtombs

fwcstombs

fwctomb

fwprintf

fwrite

fwscanf

GAND
    _getplotaction
    _putimage, _putimage_w
    _setplotaction

GBORDER
    _ellipse, _ellipse_w, _ellipse_wxy
    _pie, _pie_w, _pie_wxy
    _polygon, _polygon_w, _polygon_wxy
    _rectangle, _rectangle_w, _rectangle_wxy

GCLEARSCREEN

GCURSOROFF

GCURSORON

gcvt

gcvt, _gcvt, _wgcvt

get_osfhandle

getc
    getc, getwc
    getchar, getwchar

getc, getwc

getch
    getch
    getche
    kbhit
    ungetch

getchar

getchar, getwchar

getche
    cscanf
    getch
    getche
    kbhit
    ungetch
    vcscanf

getcmd
    getcmd
    main, wmain, WinMain, wWinMain

getcwd

getcwd, _wgetcwd

getdcwd

getdiskfree

getdrive

getenv
    Environment Names
    exec Functions
    getenv, _wgetenv
    putenv, _putenv, _wputenv
    setenv, _setenv, _wsetenv
    spawn Functions
    The TZ Environment Variable

getenv, _wgetenv

getlogcoord

getmbcp

getpid

gets
    fgets, fgetws
    gets, _getws

gets, _getws

GetVersionEx

getw

getwc
    getc, getwc
    getchar, getwchar

getwchar

getws

GFILLINTERIOR
    _ellipse, _ellipse_w, _ellipse_wxy
    _pie, _pie_w, _pie_wxy
    _polygon, _polygon_w, _polygon_wxy
    _rectangle, _rectangle_w, _rectangle_wxy

Global Data

GMT

gmtime

gmtime Functions

GOR
    _getplotaction
    _putimage, _putimage_w
    _setplotaction

GPRESET

GPSET
    _getplotaction
    _putimage, _putimage_w
    _setplotaction

graph

graph.h

graphic page

Graphics Adapters

Graphics Functions

Graphics Header Files

Graphics Library

Graphics Text Functions

GRCLIPPED

Greenwich Mean Time

GRERROR

GRFONTFILENOTFOUND

GRINSUFFICIENTMEMORY

GRINVALIDFONTFILE

GRINVALIDPARAMETER

GRMODENOTSUPPORTED

GRNOOUTPUT

GRNOTINPROPERMODE

GROK

grouping

grow_handles

GSCROLLDOWN

GSCROLLUP

GVIEWPORT

GWINDOW

GWRAPOFF

GWRAPON

GXOR
    _getplotaction
    _putimage, _putimage_w
    _setplotaction

HALF

halloc
    _heapgrow Functions
    halloc
    hfree

hantozen

harderr

hardresume

hardretn

hardware port
    inp
    inpd
    inpw
    outp
    outpd
    outpw

hdopen

Header Files

Header Files in /watcom/h

Header Files in /watcom/h/sys

Heap Functions

Heap Functions, _bheapchk

Heap Functions, _bheapmin

Heap Functions, _bheapset

Heap Functions, _bheapshrink

Heap Functions, _bheapwalk

Heap Functions, _fheapchk

Heap Functions, _fheapgrow

Heap Functions, _fheapmin

Heap Functions, _fheapset

Heap Functions, _fheapshrink

Heap Functions, _fheapwalk

Heap Functions, _heapchk

Heap Functions, _heapenable

Heap Functions, _heapgrow

Heap Functions, _heapmin

Heap Functions, _heapset

Heap Functions, _heapshrink

Heap Functions, _heapwalk

Heap Functions, _nheapchk

Heap Functions, _nheapgrow

Heap Functions, _nheapmin

Heap Functions, _nheapset

Heap Functions, _nheapshrink

Heap Functions, _nheapwalk

heapchk

heapenable

heapgrow

heapmin

heapset

heapshrink

heapwalk

HERCMONO

HERCULES

hfree

HGC

hInstance

hPrevInstance

HRES16COLOR

HRESBW

HUGE_VAL

Hyperbolic Functions, _dos_allocmem

Hyperbolic Functions, acos

Hyperbolic Functions, acosh

Hyperbolic Functions, asinh

Hyperbolic Functions, atan

Hyperbolic Functions, atanh

Hyperbolic Functions, cosh

Hyperbolic Functions, sinh

Hyperbolic Functions, tanh

hypot

IA MMX

IA MMX functions

Image Manipulation Functions

Implementation-Defined Behavior of the C Library

INCLUDE
    putenv, _putenv, _wputenv
    setenv, _setenv, _wsetenv

inp

inpd

inpw

int
    set_new_handler, _set_new_handler
    va_arg

int386
    DOS Interrupts
    int386

int386x
    DOS Interrupts
    int386x

int86
    DOS Interrupts
    int86

int86x
    DOS Interrupts
    int86x
    intr

intdos
    DOS Interrupts
    intdos

intdosx
    DOS Interrupts
    intdosx

Intel 80x86 Architecture-Specific Functions

Intel classification

Intel Pentium Multimedia Extension Functions

Intel-Specific Functions

Interrupt Functions, _disable

Interrupt Functions, _enable

INTPACK

intr
    DOS Interrupts
    intr

io.h

isalnum
    _ismbbalnum
    Character Testing
    isalnum, iswalnum

isalnum, iswalnum

isalpha
    _ismbbalpha
    Character Testing
    isalnum, iswalnum
    isalpha, iswalpha

isalpha, iswalpha

isascii

isascii, __isascii, iswascii

isatty

iscntrl
    Character Testing
    iscntrl, iswcntrl

iscntrl, iswcntrl

iscsym

iscsymf

isdigit
    isalnum, iswalnum
    isdigit, iswdigit

isdigit, iswdigit

isgraph
    _ismbbgraph
    isgraph, iswgraph
    isprint, iswprint

isgraph, iswgraph

isleadbyte

islower
    Character Testing
    isalpha, iswalpha
    islower, iswlower

islower, iswlower

ismbbalnum

ismbbalpha

ismbbgraph

ismbbkalnum

ismbbkalpha

ismbbkana

ismbbkprint

ismbbkpunct

ismbblead

ismbbprint

ismbbpunct

ismbbtrail

ismbcalnum

ismbcalpha

ismbccntrl

ismbcdigit

ismbcgraph

ismbchira

ismbckata

ismbcl0

ismbcl1

ismbcl2

ismbclegal

ismbclower

ismbcprint

ismbcpunct

ismbcspace

ismbcsymbol

ismbcupper

ismbcxdigit

ISO classification

isprint
    Character Testing
    isgraph, iswgraph
    isprint, iswprint

isprint, iswprint

ispunct

ispunct, iswpunct

isspace

isspace, iswspace

isupper
    Character Testing
    isalpha, iswalpha
    isupper, iswupper

isupper, iswupper

iswalnum
    isalnum, iswalnum
    ispunct, iswpunct
    isspace, iswspace
    wctype

iswalpha
    isalnum, iswalnum
    isalpha, iswalpha
    wctype

iswascii

iswcntrl
    isalpha, iswalpha
    iscntrl, iswcntrl
    islower, iswlower
    isupper, iswupper
    wctype

iswctype
    iswctype
    wctype

iswctype(wc, wctype("alnum"))

iswctype(wc, wctype("alpha"))

iswctype(wc, wctype("cntrl"))

iswctype(wc, wctype("digit"))

iswctype(wc, wctype("graph"))

iswctype(wc, wctype("lower"))

iswctype(wc, wctype("print"))

iswctype(wc, wctype("punct"))

iswctype(wc, wctype("space"))

iswctype(wc, wctype("upper"))

iswctype(wc, wctype("xdigit"))

iswdigit
    isalnum, iswalnum
    isalpha, iswalpha
    isdigit, iswdigit
    islower, iswlower
    isupper, iswupper
    wctype

iswgraph

iswlower
    islower, iswlower
    wctype

iswlower is true, or any wide character that is one of an

iswprint

iswpunct
    isalpha, iswalpha
    islower, iswlower
    ispunct, iswpunct
    isupper, iswupper
    wctype

iswspace
    isalpha, iswalpha
    islower, iswlower
    isspace, iswspace
    isupper, iswupper
    wctype

iswupper
    isalpha, iswalpha
    isupper, iswupper
    wctype

iswxdigit

isxdigit

isxdigit, iswxdigit

itoa