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Minor readme change

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Joshua Holmer 2016-01-11 21:26:12 -05:00
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@ -44,7 +44,7 @@ The most commonly used options are as follows:
* Optimization: `-o 1` through `-o 6`, lower is faster, higher is better compression. * Optimization: `-o 1` through `-o 6`, lower is faster, higher is better compression.
The default (`-o 2`) is sufficiently fast on a modern CPU and provides 30-50% compression The default (`-o 2`) is sufficiently fast on a modern CPU and provides 30-50% compression
gains over an unoptimized PNG. `-o 4` is 6 times slower than `-o 2` but can provide 5-10% gains over an unoptimized PNG. `-o 4` is 6 times slower than `-o 2` but can provide 5-10%
extra compression over `-o 2`. Using any setting higher than `-o 4` is generally unlikely extra compression over `-o 2`. Using any setting higher than `-o 4` is unlikely
to give any extra compression gains and is not recommended. to give any extra compression gains and is not recommended.
* Interlacing: `-i 1` will enable [Adam7](https://en.wikipedia.org/wiki/Adam7_algorithm) * Interlacing: `-i 1` will enable [Adam7](https://en.wikipedia.org/wiki/Adam7_algorithm)
PNG interlacing on any images that are processed. `-i 0` will remove interlacing from all PNG interlacing on any images that are processed. `-i 0` will remove interlacing from all