Introduction System Information
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 BIOSDATE()   Determines the system BIOS date
 BOOTCOLD()   Triggers a cold boot
 BOOTWARM()   Triggers a warm start of the system
 CPUTYPE()    Determines what type of microprocessor in use
 DOSPARAM()   Retrieves the DOS command line as a string
 ENVPARAM()   Reads the entire DOS environment table into a string
 ERRORACT()   Recommends action for a DOS error that has occurred previously
 ERRORBASE()  Source of the most-recent DOS error
 ERRORCODE()  Identifies a DOS error that has occurred previously
 ERRORORG()   Origin of the most-recent DOS error
 EXENAME()    Returns name and directory of the current CA-Clipper program
 FILESFREE()  Specifies the number of files you can open
 FILESMAX()   Specifies maximum number of files that can be open at one time
 GETCOUNTRY() Queries country setting for the operating system
 ISANSI()     Tests to see if the ANSI screen driver is installed
 ISAT()       Determines if a program is running on an AT
 ISMATH()     Determines if a math coprocessor is installed
 MEMSIZE()    Determines size of conventional or extended memory
 NUMBUFFERS() Determines the BUFFERS= setting
 NUMFILES()   Determines maximum number of files you can open simultaneously
 OSVER()      Returns the DOS version number
 PCTYPE()     Returns the type of computer in use
 SSETBREAK()  Sets and checks the DOS BREAK switch
 SSETVERIFY() Sets and checks the DOS VERIFY switch