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I have no idea what hash the dictionary uses but likely CRC-32 since it is 32-bit. But I don't think it's that much of an issue, I have yet to find a collision and I have run several tests, once I'm satisfied. I'll make the stream database a default feature.
I have not come across errors myself in the chm help file, I can always compile a pdf help file if there are issues. Perhaps the next release will come in different formats.
The reason the version information is not displayed is because this project is still at alpha stages, as you can see the tests dixen runs, there are still errors but eventually I'll commit to the idea of proper version history along with the program telling users what version it is. This is pretty much why the current version classification is written 2009_R3, where 20 is the year, 09 is the month and R3 means it's the 3rd release on that month, you just need to look at the exe dates to know what version you are using.
Xtool is reliable compared to ztool and should perform better, at least when using the zlib codec.
Crilayla was excluded from xtool because there is no room for slow tools in project plus xtool is now only available in 64-bit and the only crilayla dll around is 32-bit which is incompatible.
oodle is universal like zlib but there are issues with detecting the decompressed size which results in several streams being left behind and longer precompression times. I plan on improving this eventually, I will find a way to fix this.
About 4 bytes per repeated stream to store in dedup data.
endianness isn't something that considered when handling zlib/deflate streams. That's like saying, will a music player be able to play an mp3 player if it encoded using big endian, the standard is the same across all platforms.
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