NAME
	Flush -- Flushes buffers for a buffered filehandle (V36)

   SYNOPSIS
	success = Flush(fh)
	D0		D1

	LONG Flush(BPTR)

   FUNCTION
	Flushes any pending buffered writes to the filehandle.  All buffered
	writes will also be flushed on Close().  If the filehandle was being
	used for input, it drops the buffer, and tries to Seek() back to the
	last read position  (so subsequent reads or writes will occur at the
	expected position in the file).

   INPUTS
	fh	- Filehandle to flush.

   RESULT
	success - Success or failure.

   BUGS
	Before V37 release, Flush() returned a random value.  As of V37,
	it always returns success (this will be fixed in some future
	release).

	The V36 and V37 releases didn't properly flush filehandles which
	have never had a buffered IO done on them.  This commonly occurs
	on redirection of input of a command, or when opening a file for
	input and then calling CreateNewProc() with NP_Arguments, or when
	using a new filehandle with SelectInput() and then calling
	RunCommand().  This is fixed in V39.  A workaround would be to
	do FGetC(), then UnGetC(), then Flush().

   SEE ALSO
	FputC(), FGetC(), UnGetC(), Seek(), Close(), CreateNewProc(),
	SelectInput(), RunCommand()