> Yes. That's what {$BIT_ORDER} would stand for (still, it would not
> change *byte* order).
>
I don't understand this. I don't think the bit order within a byte is to
be considered changing.
I would call the issue "byte-order" and (thus I'd prefer something like
{$BIT_PACKED_BYTE_ORDER} or {$BIT_PACKED_ENDIAN}.
-Michael