DosIsBlinkX()                 Determine whether program is running under Blinker DOS extender.
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 Function : Determine whether the program is running under the Blinker DOS
            extender.

 Syntax   : USHORT BLXAPI DosIsBlinkX(void);

 Return   : A TRUE or FALSE value indicating whether the program is running
            under the Blinker DOS extender.

 Example:

    #include <stdio.h>
    #include <blx286.h>
    void main (void)
    {
    if (DosIsBlinkX())
       printf("Running under the Blinker extender\n");
    }