Syntax:        TXCNTLFONT()

     Purpose:       Provides a way to control soft fonts.

     Argument:      0    Delete all soft fonts
                    1    Delete all temporary soft fonts
                    2    Delete last ID specified soft font
                    4    Make last soft font specified temporary
                    5    Make last soft font specified permanent

     Returns:        0  Successful

     Usage:         TXCNTLFONT() is used anytime you need to control
                    the soft fonts you previously downloaded.

     Example:       * delete all soft fonts
                    TXCNTLFONT(0)

     See Also:      TXSETPFONT(), TXSETSFONT(), TXRESET(), TXDLFONT()