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 abort()          Abort Process and Return Error
 abs()            Calculate Absolute Value of Integer
 absread()        Read Disk Sectors
 abswrite()       Write Disk Sectors
 access()         Check File Permission Setting
 acos()           Calculate Arc Cosine
 arg()            Determine Angle in the Complex Plane
 asctime()        Convert Time from Structure to String
 asin()           Calculate Arc Sine
 assert()         Diagnostic Message Generator
 atan()           Calculate Arc Tangent
 atan2()          Calculate Arc Tangent of y/x
 atexit()         Register Exit Function
 atof()           Convert String to Double
 atoi()           Convert String to Integer
 atol()           Convert String to Long
 bcd()            Convert Number to Binary Coded Decimal
 bdos()           Invoke MS-DOS Function, Short Form
 bdosptr()        MS-DOS System Call
 bioscom()        Communications I/O
 biosdisk()       Hard Disk / Floppy I/O
 biosequip()      Check Equipment
 bioskey()        Keyboard Interface
 biosprint()      Printer I/O
 biostime()       Return the Time of Day
 bsearch()        Perform Binary Search
 cabs()           Calculate Absolute Value of Complex Number
 ceil()           Calculate Ceiling of Value
 cgets()          Get a Character String from the Console
 chdir()          Change Current Working Directory
 chmod()          Change File Permission Setting
 _chmod()         Change Access Mode of File
 chsize()         Changes File Size
 _clear87()       Get and Clear 8087/80287 Status Word
 clearerr()       Clear Error Indicator for a Stream
 clock()          Number of Clock Ticks Since Execution Started
 close()          Close File
 _close()         Close a File Handle
 clreol()         Clear Screen to End of Line
 clrscr()         Clears Screen
 complex()        Create a Complex Number
 conj()           Return Complex Conjugate of a Number
 cos()            Calculate Cosine
 cosh()           Calculate Hyperbolic Cosine
 country()        Return Country-Dependent Information
 cprintf()        Formatted Write to Console
 cputs()          Write a String to the Console
 creat()          Create a New File
 _creat()         Create a New File
 creatnew()       Create a New File
 creattemp()      Create a New File or Rewrite an Existing One
 cscanf()         Read Formatted Data from Console
 ctime()          Convert Time from Long Integer to String
 ctrlbrk()        Set Control-Break Handler
 delay()          Suspend Program Execution for Specified Time
 delline()        Deletes a Line
 difftime()       Find the Difference between Two Times
 disable()        Disable Interrupts (Macro)
 div()            Divide Two Integers
 dosexterr()      Get DOS Extended Error Values
 dostounix()      Convert Date and Time to UNIX Time Format
 dup()            Create Second Handle for Open File
 dup2()           Reassign a File Handle
 ecvt()           Convert Double to String
 enable()         Enable Interrupts (Macro)
 eof()            Test for End of File
 exec...()        An Overview of the Eight Exec Functions
 execl()          Execute Program Using: Arg List
 execle()         Execute Program Using: Arg List, Environment
 execlp()         Execute Program Using: Arg List, PATH
 execlpe()        Execute Program Using: Arg List, PATH, Environment
 execv()          Execute Program Using: Arg Array
 execve()         Execute Program Using: Arg Array, Environment
 execvp()         Execute Program Using: Arg Array, PATH
 execvpe()        Execute Program Using: Arg Array, PATH, Environment
 exit()           Terminate Process after Cleanup
 _exit()          Terminate Process without Cleanup
 exp()            Calculate Exponential
 fabs()           Calculate Absolute Value of Floating-Point
 fclose()         Close a Stream
 fcloseall()      Close All Open Streams
 fcvt()           Convert Double to String
 fdopen()         Open a Stream Using a Handle
 feof()           Detect Stream End-of-File (Macro)
 ferror()         Test for Error on a Stream (Macro)
 fflush()         Flush a Stream
 fgetc()          Read a Character from a Stream
 fgetchar()       Read a Character from Stdin
 fgetpos()        Get Current File Pointer Position
 fgets()          Read a String from Stream
 filelength()     Return File Length
 fileno()         Get File Handle Associated with Stream (Macro)
 findfirst()      Search Disk Directory
 findnext()       Fetch Files That Match findfirst()
 floor()          Calculate Floor of Value
 flushall()       Flush All Streams and Clear All Buffers
 fmod()           Calculate Floating-Point Remainder
 fnmerge()        Make New File Name
 fnsplit()        Split a Full Path Name into Its Components
 fopen()          Open a File
 _fpreset()       Reinitialize Floating-Point Math Package
 fprintf()        Write Formatted Data to Stream
 fputc()          Write a Character to a Stream
 fputchar()       Write a Character to a Stdout
 fputs()          Write a String to Stream
 fread()          Read Unformatted Data from Stream
 freopen()        Reassign a File Pointer
 frexp()          Get Mantissa and Exponent of Floating-Point Value
 fscanf()         Read Formatted Data from Screen
 fseek()          Reposition File Pointer to Given Location
 fsetpos()        Set Current File Pointer Position
 fstat()          Get Information about Open File
 ftell()          Get Current File Pointer Position
 ftime()          Store Current Time in timeb Struture
 fwrite()         Write Unformatted Data to Stream
 gcvt()           Convert Double to String
 geninterrupt()   Generate Software Interrupt (Macro)
 getc()           Read a Character from a Stream (Macro)
 getcbrk()        Get Control-Break Setting
 getch()          Get a Character from the Console without Echo
 getchar()        Read a Character from 'Stdin' (Macro)
 getche()         Get a Character from Console with Echo
 getcurdir()      Get Current Directory
 getcwd()         Get Path Name of Current Working Directory
 getdate()        Get Date
 getdfree()       Get Disk Free Space
 getdisk()        Get Current Drive
 getdta()         Get Disk Transfer Address
 getenv()         Get a Value from the Environment Table
 getfat()         Get File Allocation Table Information
 getfatd()        Get File Allocation Table Information
 getftime()       Get File Date and Time
 getpass()        Read a Password
 getpid()         Macro to Get Process ID
 getpsp()         Get the Program Segment Prefix
 gets()           Read a Line from 'Stdin'
 gettext()        Copy Text From Screen to Memory
 gettextinfo()    Get Current Text Window Information
 gettime()        Get System Time
 getvect()        Get Interrupt Vector Entry
 getverify()      Get Verify State
 getw()           Read an Integer from a Stream
 gmtime()         Convert Time from Long Integer to Structure
 gotoxy()         Position the Cursor in the Text Window
 gsignal()        Software Signals
 harderr()        Establish a Hardware Error Handler
 hardresume()     Hardware Error Handler Function
 hardretn()       Hardware Error Handler Function
 highvideo()      Set Text to High Intensity
 hypot()          Calculate the Hypotenuse of a Right Triangle
 imag()           Return Imaginary Part of a Complex Number
 inport()         Input from Hardware Port
 inportb()        Input from Hardware Port
 insline()        Insert Blank Line in Text Window
 int86()          Execute 8086 Software Interrupt
 int86x()         Set Segment Registers and Execute Software Interrupt
 intdos()         Invoke DOS Function, Long Form
 intdosx()        Set Seg Regs and Invoke DOS Function, Long Form
 intr()           Alternate 8086 Software Interrupt Interface
 ioctl()          Control I/O Device
 isalnum()        Test for Alphanumeric Character (Macro)
 isalpha()        Test for Alphabetic Character (Macro)
 isascii()        Test for ASCII Character (Macro)
 isatty()         Check for Character Device
 iscntrl()        Test for Control Character (Macro)
 isdigit()        Test for Digit (Macro)
 isgraph()        Test for Printable Character Except Space (Macro)
 islower()        Test for Lowercase (Macro)
 isprint()        Test for Printable Character (Macro)
 ispunct()        Test for Punctuation Character (Macro)
 isspace()        Test for White-Space Character (Macro)
 isupper()        Test for Uppercase (Macro)
 isxdigit()       Test for Hexadecimal Digit (Macro)
 itoa()           Convert Integer to String
 kbhit()          Check Keyboard Input Buffer for Character Waiting
 keep()           Exit and Remain Resident
 labs()           Calculate Absolute Value of Long Integer
 ldexp()          Convert Mantissa and Exponent to Floating Point
 ldiv()           Divide Two Longs
 lfind()          Linear Search for Key
 localeconv()     Return Pointer to Locale Structure
 localtime()      Convert Time from Int to Structure--Local Correction
 lock()           Set File Sharing Locks
 log()            Calculate Natural Logarithm
 log10()          Calculate Base 10 Logarithm
 longjmp()        Restore Program State
 lowvideo()       Set Text to Low Intensity
 _lrotl()         Rotate a Long Value to the Left
 _lrotr()         Rotate a Long Value to the Right
 lsearch()        Linear Search for Key; Add Key If Not Found
 lseek()          Reposition File Pointer to Specified Location
 ltoa()           Convert Long to String
 matherr()        Handle Math Error
 _matherr()       Floating-Point Error Handling Routine
 max()            Macro to Find Maximum of Two Integers
 min()            Macro to Find Minimum of Two Integers
 mkdir()          Create a New Directory
 MK_FP()          Make a Far Pointer (Macro)
 mktemp()         Create a Unique File Name
 mktime()         Convert Time to Calendar Format
 modf()           Split Floating Point into Integer Part and Fraction
 movetext()       Copies Text From One on Screen Rectangle to Another
 norm()           Calculate the Square of the Absolute Value
 normvideo()      Set Text to Original Intensity
 nosound()        Turn Speaker Off
 open()           Open a File
 _open()          Open a File For Reading or Writing
 outport()        Output word to a Hardware Port
 outportb()       Output byte to a Hardware Port (Macro)
 parsfnm()        Parse File Name
 perror()         Print Error Message
 polar()          Convert Polar Number to Complex Number
 poly()           Generate a Polynomial from Arguments
 pow()            Calculate X Raised to the Yth Power
 pow10()          Power Function
 printf()         Write Formatted String to Stdout
 putc()           Write a Character to Stream (Macro)
 putch()          Write a Character to the Console
 putchar()        Write a Character to Stdout (Macro)
 putenv()         Create New Environment Variables
 puts()           Write String to Stdout
 puttext()        Copy Text From Memory to Screen
 putw()           Write an Integer to Stream
 qsort()          Perform Quick Sort
 raise()          Send a Software Signal
 rand()           Get Pseudorandom Integer
 randbrd()        Random Block Read
 randbwr()        Random Block Write
 random()         Random Number Generator (Macro)
 randomize()      Initialize Random Number Generator (Macro)
 read()           Read Data from File
 _read()          Read Data from a File
 real()           Return Real Part of a Complex Number
 remove()         Delete a File
 rename()         Rename a File or Directory
 rewind()         Reposition File Pointer to Beginning of Stream
 rmdir()          Delete a Directory
 _rotl()          Rotate a Value to the Left
 _rotr()          Rotate a Value to the Right
 scanf()          Read Formatted Data from Stdin
 searchpath()     Search the MS-DOS Path
 segread()        Return Current Values of Segment Registers
 setbuf()         Control Stream Buffering
 setcbrk()        Set Control-Break Setting
 _setcursortype() Set the Cursor Shape
 setdate()        Set MS-DOS Date
 setdisk()        Set Current Disk Drive
 setdta()         Set Disk Transfer Address
 setftime()       Set File Date and Time
 setjmp()         Save Program State
 setlocale()      Set the Locale
 setmode()        Set File-Translation Mode
 settime()        Set System Time
 setvbuf()        Control Stream Buffering and Buffer Size
 setvect()        Set Interrupt Vector Entry
 setverify()      Set Verify State
 signal()         Specify Signal Handler
 sin()            Calculate Sine
 sinh()           Calculate Hyperbolic Sine
 sleep()          Suspend Execution for Interval
 sopen()          Open a File for Shared Operations
 sound()          Turn Speaker On at Specified Frequency
 spawn...()       An Overview of the Eight Spawn Functions
 spawnl()         Execute Program Using: Arg List
 spawnle()        Execute Program Using: Arg List, Environment
 spawnlp()        Execute Program Using Arg List, PATH
 spawnlpe()       Execute Program Using Arg List, PATH, Environment
 spawnv()         Execute Program Using Arg Array
 spawnve()        Execute Program Using Arg Array, Environment
 spawnvp()        Execute Program Using Arg Array, PATH
 spawnvpe()       Execute Program Using Arg Array, PATH, Environment
 sprintf()        Write Formatted Data to String
 sqrt()           Calculate Square Root
 srand()          Set Random Starting Point
 sscanf()         Read Formatted Data from String
 ssignal()        Implement Software Signals
 stat()           Get File-Status Information on Named File
 _status87()      Get 8087/80287 Floating-Point Status Word
 stime()          Set Time
 stpcpy()         Copy One String into Another
 strcat()         Append a String
 strchr()         Find a Character in a String
 strcmp()         Compare Two Strings, Case Sensitive
 strcmpi()        Compare Two Strings, Case Insensitive
 strcoll()        Compare Two Strings According to Locale
 strcpy()         Copy One String to Another
 strcspn()        Scan One String for Another
 strdup()         Duplicate String
 strerror()       Save System Error Message
 _strerror()      Save System Error Message
 strftime()       Format Time for String Output
 stricmp()        Compare Two Strings, Case Insensitive
 strlen()         Get String Length
 strlwr()         Convert String to Lower Case
 strncat()        Append Specified Number of Characters to a String
 strncmp()        Compare n Characters of Two Strings, Case Sensitive
 strncmpi()       Compare n Characters of Strings, Case Insensitive
 strncpy()        Copy a Specified Number of Characters
 strnicmp()       Compare n Characters of Strings, Case Insensitive
 strnset()        Initialize n Characters of String
 strpbrk()        Scan String for Character from Character Set
 strrchr()        Scan String for Last Occurrence of Character
 strrev()         Reverse Characters in String
 strset()         Set All Characters in String
 strspn()         Find First Substring
 strstr()         Find Substring
 strtod()         Convert String to Double
 strtok()         Find Next Token in String
 strtol()         Convert String to Long Decimal Integer
 strtoul()        Convert String to an Unsigned Long Decimal Integer
 strupr()         Convert String to Uppercase
 strxfrm()        Copy a Specified Number of Characters
 system()         Execute DOS Command
 tan()            Calculate Tangent
 tanh()           Calculate Hyperbolic Tangent
 tell()           Get Current File Pointer Position
 textattr()       Set Both Foreground and Background Colors
 textbackground() Set the Background Color
 textcolor()      Set the Foreground Color
 textmode()       Set Screen to Text Mode
 time()           Get Current System Time as Long Integer
 tmpfile()        Create a Temporary File
 tmpnam()         Generate A Temporary File Name
 toascii()        Convert 'c' to ASCII Character
 tolower()        Convert 'c' To Lowercase, If Appropriate
 _tolower()       Convert 'c' to Lowercase (Macro)
 toupper()        Convert 'c' to Uppercase, If Appropriate
 _toupper()       Convert 'c' to Uppercase (Macro)
 tzset()          Set External Time Variables, Environment Variables
 ultoa()          Convert Unsigned Long to String
 ungetc()         Push Character Back onto the Stream
 ungetch()        Push Back the Last Character Read from the Console
 unixtodos()      Convert Date and Time to DOS Format
 unlink()         Delete a File
 unlock()         Release File-Sharing Locks
 va_arg()         Access Variable Number of Arguments, ANSI C Style
 vfprintf()       Write Formatted Data to Stream
 vfscanf()        Perform Formatted Input from a Stream
 vprintf()        Write Formatted Data to Stdout
 vscanf()         Perform Formatted Input from Stdin
 vsprintf()       Write Formatted Data to String
 vsscanf()        Read Formatted Input from String
 wherex()         Get Horizontal Position of Cursor in Text Window
 wherey()         Get Vertical Position of Cursor in Text Window
 window()         Define a Text-mode Window
 write()          Write Data to a File
 _write()         Write Data to a File