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<p>for custom codec plugin DLLs.</p>

<p>The format's <a href="page.php?w=open_architecture">open architecture</a> allows additional future compression methods to be added to the standard.</p>

<p><big> Compression methods </big></p>
<p>The following compression methods are currently defined:</p>

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* <a href="page.php?w=LZMA">LZMA</a>&nbsp;- A variation of the <a href="page.php?w=LZ77_and_LZ78">LZ77</a> algorithm, using a sliding dictionary up to 4&nbsp;GB in length for duplicate string elimination.  The LZ stage is followed by <a href="page.php?w=entropy_coding">entropy coding</a></p><p>
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