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713 B
Markdown
13 lines
No EOL
713 B
Markdown
# Introduction #
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StuffIt X uses an extended version of Deflate. See ZipSpecs for more information about Deflate itself.
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# Differences #
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* The number of distance codes can vary, and the number of bits used to store the number of distance codes in the header can vary.
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# Data stream #
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The data stream begins with a single extra byte value. This value can range from 15 to 25 inclusive. It gives the 2-logarithm of the window size, that is, the window size is 2^byte.
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If this byte is 15, the only difference between normal Deflate and this algorithm is that the number of bits used to store the number of distance codes is 6 instead of 5. All files found so far using this algorithm use exactly this setting. |