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IOCTL Send Control String to Device Driver
IOCTL[#]filenum,stringexpr
Sends a command string of up to 255 characters to a specified device
driver.
filenum The number under which the device driver was OPENed.
stringexpr A string expression of up to 255 characters; can include
multiple commands separated by semicolons.
See Also:
IOCTL$
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