Help: TTG Tools

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I'm trying to use TTG Tools to work my way into the files to do some translation work. I know how to unpack the files to get the LANDB files, and get the TXT files. But what I can't figure out is how to re-build the archive, and to use it again for the game. I have my fully edited LANDB file located in the Output folder, ready to be put back into the TTARCH archive.