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AH = 10h DS:DX -> File Control Block (see #01345)
Return:
AL = status 00h successful FFh failed
Notes: A successful close forces all disk buffers used by the file to be written and the directory entry to be updated. Not supported by MS Windows 3.0 DOSX.EXE DOS extender
See Also: AH=0Fh - AH=16h - AH=3Eh
Category: DOS Kernel - Int 21h - D
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