Vorbis dev - May 2001 - question about vorbis_synthesis_blockin

I'm looking at the vorbis_synthesis_blockin and pcmout functions, and
I'm
confused about the positioning and determination of centerW wrt adding in
the next set of data. Specifically, it seems legal (in
vorbis_synthesis_pcmout) to return to the user any data up to the centerW
position; however, in vorbis_synthesis_blockin, if you have a long block
following a short block, it is legal to overlap the long block back to a
position before centerW, thus modifying data that the user may already have
requested.  Have I interpreted the code correctly, and is it expected to
truncate the block in such a way?

thanks,

nds

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Please disregard the query; the answer was in Vorbis Illuminated 

apologies for the bandwidth waste, and thanks very much for the
documentation!

nds

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