NAME
	FWrite -- Writes a number of blocks to an output (buffered) (V36)

   SYNOPSIS
	count = FWrite(fh, buf, blocklen, blocks)
	D0	       D1  D2     D3        D4

	LONG FWrite(BPTR, STRPTR, ULONG, ULONG)

   FUNCTION
	Attempts to write a number of blocks, each blocklen long, from the
	specified buffer to the output stream.  May return less than the
	number of blocks requested, if there is some error such as a full
	disk or r/w error.  This call is buffered.

   INPUTS
	fh	 - filehandle to use for buffered I/O
	buf      - Area to write bytes from.
	blocklen - number of bytes per block.  Must be > 0.
	blocks	 - number of blocks to write.  Must be > 0.

   RESULT
	count - Number of _blocks_ written.  On an error, the number of
		blocks actually written is returned.

   BUGS
	Doesn't clear IoErr() before starting.  If you want to find out
	about errors, use SetIoErr(0L) before calling.

   SEE ALSO
	FPutC(), FRead(), FPuts()