Question about CDVD's compression.. ".table" file?

[S.SubZero]

I compress my images using the CDVD option "Compress Iso". It results in two files, the bz2 compressed image, and a ".table" file. I don't know anything about bzip2 compression so I don't know what this file is. What is it? Do I need it? It's hard to find on Google since .table is not easy to narrow down as a search term.

[ChickenLiver]

Yes you do. It's an index file. bz2 files don't normally have any indexing, so the only way to get byte 500,000,001 of a file is to uncompress (Or at least partially uncompress) the first 500 million bytes first. The table files solve that problem.