Important Notice

The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

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     This directive is reserved for use with add-on products supplied
     by Micro Focus. Do not change its setting unless you have an
     appropriate add-on product.
 
     This directive only has an effect if the CALLFH directive is used.
 
     When WRITETHRU is specified, the file handler EXTFH does not
     buffer disk writes. If the operating system allows the choice,
     the operating system will not buffer disk writes either.
 
     See also ◄CALLFH►
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