Compatibility: 2.0+
Expects: AX    5700H
BX    file handle of an open file
                                                                  
Returns: AX    error code if CF is set to CY
CX    file's time, in FileTimeRec format (if no error)
DX    file's date, in FileDateRec format
                                                                  
Info: Obtains the time and date at which the specified file was created
or most-recently modified (the last time its directory entry was
updated).

Notes:   This is useful only for currently-open files.  To avoid the
file open/close overhead, use fn 4eH (find first file).

See Also: Fn 5701H (set file time/date)
File time/date format (bit-field format of return info)
- -

DOS Fn 5700H: Query File Time/Date