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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documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

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─────Creating Child Windows─────────────────────────────────────────────────
 
     The FILE = 'USER' option in the OPEN statement opens a unit that
     FORTRAN treats like any other unit but that Windows treats as a
     child window. Any input or output directed to that unit is sent
     to the child window.
 
     By default, FORTRAN supports up to 20 child windows.
 
     Files opened with FILE = 'USER' can only specify the same
     attributes as units connected to the screen or keyboard. Other
     attributes result in run-time errors.
 
     Each file has its own buffer. You set its size with the BLOCKSIZE
     option when you open the child window.
 
     Buffer Size        Bytes
 
     Default            16,384
     Minimum            512
     Maximum            2**31
 
     If you specify a block size of 0, the buffer size limited only by
     available memory.
 
     See Also: ◄OPENi►
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