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  Interrupt:   2Fh     Function:   10h
 
  Title:       SHARE [Version 3.0+]
 
  Description:
 
     Returns a code indicating whether the SHARE.EXE file-sharing
     module has been loaded.
 
     Input                      Output
 
     AH = 10h                   If function successful
     AL = Subfunction             Carry flag: clear
          00h = Get Installed     AL = SHARE installation status
                State                = 00h (if not installed, OK to
                                            install)
                                     = 01h (if not installed, not OK to
                                            install)
                                     = FFh (if installed)
 
                                If function unsuccessful
                                  Carry flag: set
                                  AX = Error code
                                    -♦-