liboggz oggz_get_bos, oggz_get_eos

Hi,

I was wondering what oggz_get_bos and oggz_get_eos are supposed to do,
specifically are they meant to be used in oggz_read mode?  The
documentation says "Determine if a given logical bitstream is at
[bos/eos]".  However if get_bos is given a specific serialno it
returns that stream's b_o_s flag which, in read mode, is set on
initialisation.  The serialno=-1 (for all streams) instead checks
delivered_non_b_o_s.  Are these functions really intended for write
mode?

Thanks
imalone