html文档解析［最好是oc，不过其他的点子可以点出来］
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<title>Pincrush</title>
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<h1>Pincrush</h1>
<p>Pincrush is an open PNG optimizer implementing Apple's proprietary CgBI format.</p>
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<p>Links
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<li><a href="http://www.github.com/DHowett/pincrush">Source Code</a></li>
<li><a href="http://iphonedevwiki.net/index.php/CgBI_file_format">CgBI File Format information</a></li>
<li>Binaries for other platforms
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<li><a href="pincrush-osx">OS X (10.4+, ppc/i386/x86_64)</a></li>
<li><a href="pincrush-l64">Linux (64-bit)</a></li>
<li><a href="pincrush-l32">Linux (32-bit)</a></li>
<li><a href="pincrush.exe">Windows (?!)</a></li>
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