Changes

Uncompressed TXZ files are divided into several different sections, to extract the different sections a header must be parsed at the beginning of the file. The first 4 bytes will tell you how many sections there are. After that follows 4 * <number of sections> bytes containing offsets into the file for each section. A section can be assumed to end where the next section begins and the last section runs until the end of the file. Offsets do not include the first 4 bytes of the file! Add 4 to get the actual file offset for each section.